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git01.mediatek.com / haproxy / 663193882af02fe419584e05ab10e87f03cee90d / . / src / proto_http.c
blob: e6d610f311250b31f51bd3885476a693db0e3df5 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4 * Copyright 2000-2007 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]26#include <common/appsession.h>
27#include <common/compat.h>
28#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]29#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]30#include <common/memory.h>
31#include <common/mini-clist.h>
32#include <common/standard.h>
33#include <common/time.h>
34#include <common/uri_auth.h>
35#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]36
37#include <types/capture.h>
38#include <types/client.h>
39#include <types/global.h>
40#include <types/httperr.h>
41#include <types/polling.h>
42#include <types/proxy.h>
43#include <types/server.h>
44
45#include <proto/backend.h>
46#include <proto/buffers.h>
47#include <proto/fd.h>
48#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]49#include <proto/hdr_idx.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]50#include <proto/proto_http.h>
51#include <proto/queue.h>
52#include <proto/session.h>
53#include <proto/task.h>
54
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]55#ifdef CONFIG_HAP_TCPSPLICE
56#include <libtcpsplice.h>
57#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]58
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]59#define DEBUG_PARSE_NO_SPEEDUP
60#undef DEBUG_PARSE_NO_SPEEDUP
61
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]62/* This is used to perform a quick jump as an alternative to a break/continue
63 * instruction. The first argument is the label for normal operation, and the
64 * second one is the break/continue instruction in the no_speedup mode.
65 */
66
67#ifdef DEBUG_PARSE_NO_SPEEDUP
68#define QUICK_JUMP(x,y) y
69#else
70#define QUICK_JUMP(x,y) goto x
71#endif
72
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]73/* This is used by remote monitoring */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]74const char HTTP_200[] =
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]75 "HTTP/1.0 200 OK\r\n"
76 "Cache-Control: no-cache\r\n"
77 "Connection: close\r\n"
78 "Content-Type: text/html\r\n"
79 "\r\n"
80 "<html><body><h1>200 OK</h1>\nHAProxy: service ready.\n</body></html>\n";
81
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]82const struct chunk http_200_chunk = {
83 .str = (char *)&HTTP_200,
84 .len = sizeof(HTTP_200)-1
85};
86
87const char *HTTP_302 =
88 "HTTP/1.0 302 Found\r\n"
89 "Cache-Control: no-cache\r\n"
90 "Connection: close\r\n"
91 "Location: "; /* not terminated since it will be concatenated with the URL */
92
93/* same as 302 except that the browser MUST retry with the GET method */
94const char *HTTP_303 =
95 "HTTP/1.0 303 See Other\r\n"
96 "Cache-Control: no-cache\r\n"
97 "Connection: close\r\n"
98 "Location: "; /* not terminated since it will be concatenated with the URL */
99
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]100/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
101const char *HTTP_401_fmt =
102 "HTTP/1.0 401 Unauthorized\r\n"
103 "Cache-Control: no-cache\r\n"
104 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]105 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]106 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
107 "\r\n"
108 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
109
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]110
111const int http_err_codes[HTTP_ERR_SIZE] = {
112 [HTTP_ERR_400] = 400,
113 [HTTP_ERR_403] = 403,
114 [HTTP_ERR_408] = 408,
115 [HTTP_ERR_500] = 500,
116 [HTTP_ERR_502] = 502,
117 [HTTP_ERR_503] = 503,
118 [HTTP_ERR_504] = 504,
119};
120
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]121static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]122 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]123 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]124 "Cache-Control: no-cache\r\n"
125 "Connection: close\r\n"
126 "Content-Type: text/html\r\n"
127 "\r\n"
128 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
129
130 [HTTP_ERR_403] =
131 "HTTP/1.0 403 Forbidden\r\n"
132 "Cache-Control: no-cache\r\n"
133 "Connection: close\r\n"
134 "Content-Type: text/html\r\n"
135 "\r\n"
136 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
137
138 [HTTP_ERR_408] =
139 "HTTP/1.0 408 Request Time-out\r\n"
140 "Cache-Control: no-cache\r\n"
141 "Connection: close\r\n"
142 "Content-Type: text/html\r\n"
143 "\r\n"
144 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
145
146 [HTTP_ERR_500] =
147 "HTTP/1.0 500 Server Error\r\n"
148 "Cache-Control: no-cache\r\n"
149 "Connection: close\r\n"
150 "Content-Type: text/html\r\n"
151 "\r\n"
152 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
153
154 [HTTP_ERR_502] =
155 "HTTP/1.0 502 Bad Gateway\r\n"
156 "Cache-Control: no-cache\r\n"
157 "Connection: close\r\n"
158 "Content-Type: text/html\r\n"
159 "\r\n"
160 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
161
162 [HTTP_ERR_503] =
163 "HTTP/1.0 503 Service Unavailable\r\n"
164 "Cache-Control: no-cache\r\n"
165 "Connection: close\r\n"
166 "Content-Type: text/html\r\n"
167 "\r\n"
168 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
169
170 [HTTP_ERR_504] =
171 "HTTP/1.0 504 Gateway Time-out\r\n"
172 "Cache-Control: no-cache\r\n"
173 "Connection: close\r\n"
174 "Content-Type: text/html\r\n"
175 "\r\n"
176 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
177
178};
179
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]180/* We must put the messages here since GCC cannot initialize consts depending
181 * on strlen().
182 */
183struct chunk http_err_chunks[HTTP_ERR_SIZE];
184
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]185#define FD_SETS_ARE_BITFIELDS
186#ifdef FD_SETS_ARE_BITFIELDS
187/*
188 * This map is used with all the FD_* macros to check whether a particular bit
189 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
190 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
191 * byte should be encoded. Be careful to always pass bytes from 0 to 255
192 * exclusively to the macros.
193 */
194fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
195fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
196
197#else
198#error "Check if your OS uses bitfields for fd_sets"
199#endif
200
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]201void init_proto_http()
202{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]203 int i;
204 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]205 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]206
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]207 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
208 if (!http_err_msgs[msg]) {
209 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
210 abort();
211 }
212
213 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
214 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
215 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]216
217 /* initialize the log header encoding map : '{|}"#' should be encoded with
218 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
219 * URL encoding only requires '"', '#' to be encoded as well as non-
220 * printable characters above.
221 */
222 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
223 memset(url_encode_map, 0, sizeof(url_encode_map));
224 for (i = 0; i < 32; i++) {
225 FD_SET(i, hdr_encode_map);
226 FD_SET(i, url_encode_map);
227 }
228 for (i = 127; i < 256; i++) {
229 FD_SET(i, hdr_encode_map);
230 FD_SET(i, url_encode_map);
231 }
232
233 tmp = "\"#{|}";
234 while (*tmp) {
235 FD_SET(*tmp, hdr_encode_map);
236 tmp++;
237 }
238
239 tmp = "\"#";
240 while (*tmp) {
241 FD_SET(*tmp, url_encode_map);
242 tmp++;
243 }
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]244}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]245
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]246/*
247 * We have 26 list of methods (1 per first letter), each of which can have
248 * up to 3 entries (2 valid, 1 null).
249 */
250struct http_method_desc {
251 http_meth_t meth;
252 int len;
253 const char text[8];
254};
255
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]256const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]257 ['C' - 'A'] = {
258 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
259 },
260 ['D' - 'A'] = {
261 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
262 },
263 ['G' - 'A'] = {
264 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
265 },
266 ['H' - 'A'] = {
267 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
268 },
269 ['P' - 'A'] = {
270 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
271 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
272 },
273 ['T' - 'A'] = {
274 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
275 },
276 /* rest is empty like this :
277 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
278 */
279};
280
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]281/* It is about twice as fast on recent architectures to lookup a byte in a
282 * table than two perform a boolean AND or OR between two tests. Refer to
283 * RFC2616 for those chars.
284 */
285
286const char http_is_spht[256] = {
287 [' '] = 1, ['\t'] = 1,
288};
289
290const char http_is_crlf[256] = {
291 ['\r'] = 1, ['\n'] = 1,
292};
293
294const char http_is_lws[256] = {
295 [' '] = 1, ['\t'] = 1,
296 ['\r'] = 1, ['\n'] = 1,
297};
298
299const char http_is_sep[256] = {
300 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
301 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
302 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
303 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
304 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
305};
306
307const char http_is_ctl[256] = {
308 [0 ... 31] = 1,
309 [127] = 1,
310};
311
312/*
313 * A token is any ASCII char that is neither a separator nor a CTL char.
314 * Do not overwrite values in assignment since gcc-2.95 will not handle
315 * them correctly. Instead, define every non-CTL char's status.
316 */
317const char http_is_token[256] = {
318 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
319 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
320 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
321 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
322 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
323 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
324 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
325 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
326 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
327 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
328 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
329 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
330 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
331 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
332 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
333 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
334 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
335 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
336 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
337 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
338 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
339 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
340 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
341 ['|'] = 1, ['}'] = 0, ['~'] = 1,
342};
343
344
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]345/*
346 * An http ver_token is any ASCII which can be found in an HTTP version,
347 * which includes 'H', 'T', 'P', '/', '.' and any digit.
348 */
349const char http_is_ver_token[256] = {
350 ['.'] = 1, ['/'] = 1,
351 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
352 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
353 ['H'] = 1, ['P'] = 1, ['T'] = 1,
354};
355
356
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]357#ifdef DEBUG_FULL
358static char *cli_stnames[5] = {"HDR", "DAT", "SHR", "SHW", "CLS" };
359static char *srv_stnames[7] = {"IDL", "CON", "HDR", "DAT", "SHR", "SHW", "CLS" };
360#endif
361
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]362static void http_sess_log(struct session *s);
363
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]364/*
365 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
366 * CRLF. Text length is measured first, so it cannot be NULL.
367 * The header is also automatically added to the index <hdr_idx>, and the end
368 * of headers is automatically adjusted. The number of bytes added is returned
369 * on success, otherwise <0 is returned indicating an error.
370 */
371int http_header_add_tail(struct buffer *b, struct http_msg *msg,
372 struct hdr_idx *hdr_idx, const char *text)
373{
374 int bytes, len;
375
376 len = strlen(text);
377 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
378 if (!bytes)
379 return -1;
380 msg->eoh += bytes;
381 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
382}
383
384/*
385 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
386 * CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
387 * the buffer is only opened and the space reserved, but nothing is copied.
388 * The header is also automatically added to the index <hdr_idx>, and the end
389 * of headers is automatically adjusted. The number of bytes added is returned
390 * on success, otherwise <0 is returned indicating an error.
391 */
392int http_header_add_tail2(struct buffer *b, struct http_msg *msg,
393 struct hdr_idx *hdr_idx, const char *text, int len)
394{
395 int bytes;
396
397 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
398 if (!bytes)
399 return -1;
400 msg->eoh += bytes;
401 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
402}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]403
404/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]405 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
406 * If so, returns the position of the first non-space character relative to
407 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
408 * to return a pointer to the place after the first space. Returns 0 if the
409 * header name does not match. Checks are case-insensitive.
410 */
411int http_header_match2(const char *hdr, const char *end,
412 const char *name, int len)
413{
414 const char *val;
415
416 if (hdr + len >= end)
417 return 0;
418 if (hdr[len] != ':')
419 return 0;
420 if (strncasecmp(hdr, name, len) != 0)
421 return 0;
422 val = hdr + len + 1;
423 while (val < end && HTTP_IS_SPHT(*val))
424 val++;
425 if ((val >= end) && (len + 2 <= end - hdr))
426 return len + 2; /* we may replace starting from second space */
427 return val - hdr;
428}
429
430/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]431 * returns a message to the client ; the connection is shut down for read,
432 * and the request is cleared so that no server connection can be initiated.
433 * The client must be in a valid state for this (HEADER, DATA ...).
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]434 * Nothing is performed on the server side. The message is contained in a
435 * "chunk". If it is null, then an empty message is used.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]436 * The reply buffer doesn't need to be empty before this.
437 */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]438void client_retnclose(struct session *s, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]439{
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]440 EV_FD_CLR(s->cli_fd, DIR_RD);
441 EV_FD_SET(s->cli_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]442 tv_eternity(&s->req->rex);
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]443 if (s->fe->clitimeout)
444 tv_delayfrom(&s->rep->wex, &now, s->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]445 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]446 tv_eternity(&s->rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]447 shutdown(s->cli_fd, SHUT_RD);
448 s->cli_state = CL_STSHUTR;
449 buffer_flush(s->rep);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]450 if (msg->len)
451 buffer_write(s->rep, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]452 s->req->l = 0;
453}
454
455
456/*
457 * returns a message into the rep buffer, and flushes the req buffer.
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]458 * The reply buffer doesn't need to be empty before this. The message
459 * is contained in a "chunk". If it is null, then an empty message is
460 * used.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]461 */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]462void client_return(struct session *s, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]463{
464 buffer_flush(s->rep);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]465 if (msg->len)
466 buffer_write(s->rep, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]467 s->req->l = 0;
468}
469
470
471/* This function turns the server state into the SV_STCLOSE, and sets
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]472 * indicators accordingly. Note that if <status> is 0, or if the message
473 * pointer is NULL, then no message is returned.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]474 */
475void srv_close_with_err(struct session *t, int err, int finst,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]476 int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]477{
478 t->srv_state = SV_STCLOSE;
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]479 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]480 t->txn.status = status;
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]481 if (t->fe->mode == PR_MODE_HTTP)
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]482 client_return(t, msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]483 }
484 if (!(t->flags & SN_ERR_MASK))
485 t->flags |= err;
486 if (!(t->flags & SN_FINST_MASK))
487 t->flags |= finst;
488}
489
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]490/* This function returns the appropriate error location for the given session
491 * and message.
492 */
493
494struct chunk *error_message(struct session *s, int msgnum)
495{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]496 if (s->be->errmsg[msgnum].str)
497 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]498 else if (s->fe->errmsg[msgnum].str)
499 return &s->fe->errmsg[msgnum];
500 else
501 return &http_err_chunks[msgnum];
502}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]503
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]504/*
505 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
506 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
507 */
508static http_meth_t find_http_meth(const char *str, const int len)
509{
510 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]511 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]512
513 m = ((unsigned)*str - 'A');
514
515 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]516 for (h = http_methods[m]; h->len > 0; h++) {
517 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]518 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]519 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]520 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]521 };
522 return HTTP_METH_OTHER;
523 }
524 return HTTP_METH_NONE;
525
526}
527
528
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]529/* Processes the client and server jobs of a session task, then
530 * puts it back to the wait queue in a clean state, or
531 * cleans up its resources if it must be deleted. Returns
532 * the time the task accepts to wait, or TIME_ETERNITY for
533 * infinity.
534 */
535int process_session(struct task *t)
536{
537 struct session *s = t->context;
538 int fsm_resync = 0;
539
540 do {
541 fsm_resync = 0;
542 //fprintf(stderr,"before_cli:cli=%d, srv=%d\n", s->cli_state, s->srv_state);
543 fsm_resync |= process_cli(s);
544 //fprintf(stderr,"cli/srv:cli=%d, srv=%d\n", s->cli_state, s->srv_state);
545 fsm_resync |= process_srv(s);
546 //fprintf(stderr,"after_srv:cli=%d, srv=%d\n", s->cli_state, s->srv_state);
547 } while (fsm_resync);
548
549 if (s->cli_state != CL_STCLOSE || s->srv_state != SV_STCLOSE) {
550 struct timeval min1, min2;
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]551 s->req->flags &= BF_CLEAR_READ & BF_CLEAR_WRITE;
552 s->rep->flags &= BF_CLEAR_READ & BF_CLEAR_WRITE;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]553
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]554 tv_min(&min1, &s->req->rex, &s->req->wex);
555 tv_min(&min2, &s->rep->rex, &s->rep->wex);
556 tv_min(&min1, &min1, &s->req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]557 tv_min(&t->expire, &min1, &min2);
558
559 /* restore t to its place in the task list */
560 task_queue(t);
561
562#ifdef DEBUG_FULL
563 /* DEBUG code : this should never ever happen, otherwise it indicates
564 * that a task still has something to do and will provoke a quick loop.
565 */
566 if (tv_remain2(&now, &t->expire) <= 0)
567 exit(100);
568#endif
569
570 return tv_remain2(&now, &t->expire); /* nothing more to do */
571 }
572
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]573 s->fe->feconn--;
574 if (s->flags & SN_BE_ASSIGNED)
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]575 s->be->beconn--;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]576 actconn--;
577
578 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
579 int len;
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]580 len = sprintf(trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]581 s->uniq_id, s->be->id,
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]582 (unsigned short)s->cli_fd, (unsigned short)s->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]583 write(1, trash, len);
584 }
585
586 s->logs.t_close = tv_diff(&s->logs.tv_accept, &now);
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]587 if (s->req != NULL)
588 s->logs.bytes_in = s->req->total;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]589 if (s->rep != NULL)
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]590 s->logs.bytes_out = s->rep->total;
591
592 s->fe->bytes_in += s->logs.bytes_in;
593 s->fe->bytes_out += s->logs.bytes_out;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]594 if (s->be != s->fe) {
595 s->be->bytes_in += s->logs.bytes_in;
596 s->be->bytes_out += s->logs.bytes_out;
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]597 }
598 if (s->srv) {
599 s->srv->bytes_in += s->logs.bytes_in;
600 s->srv->bytes_out += s->logs.bytes_out;
601 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]602
603 /* let's do a final log if we need it */
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]604 if (s->logs.logwait &&
605 !(s->flags & SN_MONITOR) &&
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]606 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
607 if (s->fe->to_log & LW_REQ)
608 http_sess_log(s);
609 else
610 tcp_sess_log(s);
611 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]612
613 /* the task MUST not be in the run queue anymore */
614 task_delete(t);
615 session_free(s);
616 task_free(t);
617 return TIME_ETERNITY; /* rest in peace for eternity */
618}
619
620
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]621extern const char sess_term_cond[8];
622extern const char sess_fin_state[8];
623extern const char *monthname[12];
624const char sess_cookie[4] = "NIDV"; /* No cookie, Invalid cookie, cookie for a Down server, Valid cookie */
625const char sess_set_cookie[8] = "N1I3PD5R"; /* No set-cookie, unknown, Set-Cookie Inserted, unknown,
626 Set-cookie seen and left unchanged (passive), Set-cookie Deleted,
627 unknown, Set-cookie Rewritten */
628void **pool_requri = NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]629
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]630/*
631 * send a log for the session when we have enough info about it.
632 * Will not log if the frontend has no log defined.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]633 */
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]634static void http_sess_log(struct session *s)
635{
636 char pn[INET6_ADDRSTRLEN + strlen(":65535")];
637 struct proxy *fe = s->fe;
638 struct proxy *be = s->be;
639 struct proxy *prx_log;
640 struct http_txn *txn = &s->txn;
641 int tolog;
642 char *uri, *h;
643 char *svid;
644 struct tm *tm;
645 static char tmpline[MAX_SYSLOG_LEN];
646 int hdr;
647
648 if (fe->logfac1 < 0 && fe->logfac2 < 0)
649 return;
650 prx_log = fe;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]651
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]652 if (s->cli_addr.ss_family == AF_INET)
653 inet_ntop(AF_INET,
654 (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
655 pn, sizeof(pn));
656 else
657 inet_ntop(AF_INET6,
658 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
659 pn, sizeof(pn));
660
661 tm = localtime((time_t *)&s->logs.tv_accept.tv_sec);
662
663
664 /* FIXME: let's limit ourselves to frontend logging for now. */
665 tolog = fe->to_log;
666
667 h = tmpline;
668 if (fe->to_log & LW_REQHDR &&
669 txn->req.cap &&
670 (h < tmpline + sizeof(tmpline) - 10)) {
671 *(h++) = ' ';
672 *(h++) = '{';
673 for (hdr = 0; hdr < fe->nb_req_cap; hdr++) {
674 if (hdr)
675 *(h++) = '|';
676 if (txn->req.cap[hdr] != NULL)
677 h = encode_string(h, tmpline + sizeof(tmpline) - 7,
678 '#', hdr_encode_map, txn->req.cap[hdr]);
679 }
680 *(h++) = '}';
681 }
682
683 if (fe->to_log & LW_RSPHDR &&
684 txn->rsp.cap &&
685 (h < tmpline + sizeof(tmpline) - 7)) {
686 *(h++) = ' ';
687 *(h++) = '{';
688 for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) {
689 if (hdr)
690 *(h++) = '|';
691 if (txn->rsp.cap[hdr] != NULL)
692 h = encode_string(h, tmpline + sizeof(tmpline) - 4,
693 '#', hdr_encode_map, txn->rsp.cap[hdr]);
694 }
695 *(h++) = '}';
696 }
697
698 if (h < tmpline + sizeof(tmpline) - 4) {
699 *(h++) = ' ';
700 *(h++) = '"';
701 uri = txn->uri ? txn->uri : "<BADREQ>";
702 h = encode_string(h, tmpline + sizeof(tmpline) - 1,
703 '#', url_encode_map, uri);
704 *(h++) = '"';
705 }
706 *h = '\0';
707
708 svid = (tolog & LW_SVID) ?
709 (s->data_source != DATA_SRC_STATS) ?
710 (s->srv != NULL) ? s->srv->id : "<NOSRV>" : "<STATS>" : "-";
711
712 send_log(prx_log, LOG_INFO,
713 "%s:%d [%02d/%s/%04d:%02d:%02d:%02d.%03d]"
714 " %s %s/%s %d/%d/%d/%d/%s%d %d %s%lld"
715 " %s %s %c%c%c%c %d/%d/%d/%d %d/%d%s\n",
716 pn,
717 (s->cli_addr.ss_family == AF_INET) ?
718 ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port) :
719 ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
720 tm->tm_mday, monthname[tm->tm_mon], tm->tm_year+1900,
721 tm->tm_hour, tm->tm_min, tm->tm_sec, s->logs.tv_accept.tv_usec/1000,
722 fe->id, be->id, svid,
723 s->logs.t_request,
724 (s->logs.t_queue >= 0) ? s->logs.t_queue - s->logs.t_request : -1,
725 (s->logs.t_connect >= 0) ? s->logs.t_connect - s->logs.t_queue : -1,
726 (s->logs.t_data >= 0) ? s->logs.t_data - s->logs.t_connect : -1,
727 (tolog & LW_BYTES) ? "" : "+", s->logs.t_close,
728 txn->status,
729 (tolog & LW_BYTES) ? "" : "+", s->logs.bytes_in,
730 txn->cli_cookie ? txn->cli_cookie : "-",
731 txn->srv_cookie ? txn->srv_cookie : "-",
732 sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT],
733 sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT],
734 (be->options & PR_O_COOK_ANY) ? sess_cookie[(txn->flags & TX_CK_MASK) >> TX_CK_SHIFT] : '-',
735 (be->options & PR_O_COOK_ANY) ? sess_set_cookie[(txn->flags & TX_SCK_MASK) >> TX_SCK_SHIFT] : '-',
736 actconn, fe->feconn, be->beconn, s->srv ? s->srv->cur_sess : 0,
737 s->logs.srv_queue_size, s->logs.prx_queue_size, tmpline);
738
739 s->logs.logwait = 0;
740}
741
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]742
743/*
744 * Capture headers from message starting at <som> according to header list
745 * <cap_hdr>, and fill the <idx> structure appropriately.
746 */
747void capture_headers(char *som, struct hdr_idx *idx,
748 char **cap, struct cap_hdr *cap_hdr)
749{
750 char *eol, *sol, *col, *sov;
751 int cur_idx;
752 struct cap_hdr *h;
753 int len;
754
755 sol = som + hdr_idx_first_pos(idx);
756 cur_idx = hdr_idx_first_idx(idx);
757
758 while (cur_idx) {
759 eol = sol + idx->v[cur_idx].len;
760
761 col = sol;
762 while (col < eol && *col != ':')
763 col++;
764
765 sov = col + 1;
766 while (sov < eol && http_is_lws[(unsigned char)*sov])
767 sov++;
768
769 for (h = cap_hdr; h; h = h->next) {
770 if ((h->namelen == col - sol) &&
771 (strncasecmp(sol, h->name, h->namelen) == 0)) {
772 if (cap[h->index] == NULL)
773 cap[h->index] =
774 pool_alloc_from(h->pool, h->len + 1);
775
776 if (cap[h->index] == NULL) {
777 Alert("HTTP capture : out of memory.\n");
778 continue;
779 }
780
781 len = eol - sov;
782 if (len > h->len)
783 len = h->len;
784
785 memcpy(cap[h->index], sov, len);
786 cap[h->index][len]=0;
787 }
788 }
789 sol = eol + idx->v[cur_idx].cr + 1;
790 cur_idx = idx->v[cur_idx].next;
791 }
792}
793
794
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]795/* either we find an LF at <ptr> or we jump to <bad>.
796 */
797#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
798
799/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
800 * otherwise to <http_msg_ood> with <state> set to <st>.
801 */
802#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
803 ptr++; \
804 if (likely(ptr < end)) \
805 goto good; \
806 else { \
807 state = (st); \
808 goto http_msg_ood; \
809 } \
810 } while (0)
811
812
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]813/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]814 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]815 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
816 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
817 * will give undefined results.
818 * Note that it is upon the caller's responsibility to ensure that ptr < end,
819 * and that msg->sol points to the beginning of the response.
820 * If a complete line is found (which implies that at least one CR or LF is
821 * found before <end>, the updated <ptr> is returned, otherwise NULL is
822 * returned indicating an incomplete line (which does not mean that parts have
823 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
824 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
825 * upon next call.
826 *
827 * This function was intentionnally designed to be called from
828 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
829 * within its state machine and use the same macros, hence the need for same
830 * labels and variable names.
831 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]832const char *http_parse_stsline(struct http_msg *msg, const char *msg_buf, int state,
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]833 const char *ptr, const char *end,
834 char **ret_ptr, int *ret_state)
835{
836 __label__
837 http_msg_rpver,
838 http_msg_rpver_sp,
839 http_msg_rpcode,
840 http_msg_rpcode_sp,
841 http_msg_rpreason,
842 http_msg_rpline_eol,
843 http_msg_ood, /* out of data */
844 http_msg_invalid;
845
846 switch (state) {
847 http_msg_rpver:
848 case HTTP_MSG_RPVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]849 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]850 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
851
852 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]853 msg->sl.st.v_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]854 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
855 }
856 goto http_msg_invalid;
857
858 http_msg_rpver_sp:
859 case HTTP_MSG_RPVER_SP:
860 if (likely(!HTTP_IS_LWS(*ptr))) {
861 msg->sl.st.c = ptr - msg_buf;
862 goto http_msg_rpcode;
863 }
864 if (likely(HTTP_IS_SPHT(*ptr)))
865 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
866 /* so it's a CR/LF, this is invalid */
867 goto http_msg_invalid;
868
869 http_msg_rpcode:
870 case HTTP_MSG_RPCODE:
871 if (likely(!HTTP_IS_LWS(*ptr)))
872 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
873
874 if (likely(HTTP_IS_SPHT(*ptr))) {
875 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
876 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
877 }
878
879 /* so it's a CR/LF, so there is no reason phrase */
880 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
881 http_msg_rsp_reason:
882 /* FIXME: should we support HTTP responses without any reason phrase ? */
883 msg->sl.st.r = ptr - msg_buf;
884 msg->sl.st.r_l = 0;
885 goto http_msg_rpline_eol;
886
887 http_msg_rpcode_sp:
888 case HTTP_MSG_RPCODE_SP:
889 if (likely(!HTTP_IS_LWS(*ptr))) {
890 msg->sl.st.r = ptr - msg_buf;
891 goto http_msg_rpreason;
892 }
893 if (likely(HTTP_IS_SPHT(*ptr)))
894 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
895 /* so it's a CR/LF, so there is no reason phrase */
896 goto http_msg_rsp_reason;
897
898 http_msg_rpreason:
899 case HTTP_MSG_RPREASON:
900 if (likely(!HTTP_IS_CRLF(*ptr)))
901 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
902 msg->sl.st.r_l = (ptr - msg_buf) - msg->sl.st.r;
903 http_msg_rpline_eol:
904 /* We have seen the end of line. Note that we do not
905 * necessarily have the \n yet, but at least we know that we
906 * have EITHER \r OR \n, otherwise the response would not be
907 * complete. We can then record the response length and return
908 * to the caller which will be able to register it.
909 */
910 msg->sl.st.l = ptr - msg->sol;
911 return ptr;
912
913#ifdef DEBUG_FULL
914 default:
915 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
916 exit(1);
917#endif
918 }
919
920 http_msg_ood:
921 /* out of data */
922 if (ret_state)
923 *ret_state = state;
924 if (ret_ptr)
925 *ret_ptr = (char *)ptr;
926 return NULL;
927
928 http_msg_invalid:
929 /* invalid message */
930 if (ret_state)
931 *ret_state = HTTP_MSG_ERROR;
932 return NULL;
933}
934
935
936/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]937 * This function parses a request line between <ptr> and <end>, starting with
938 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
939 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
940 * will give undefined results.
941 * Note that it is upon the caller's responsibility to ensure that ptr < end,
942 * and that msg->sol points to the beginning of the request.
943 * If a complete line is found (which implies that at least one CR or LF is
944 * found before <end>, the updated <ptr> is returned, otherwise NULL is
945 * returned indicating an incomplete line (which does not mean that parts have
946 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
947 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
948 * upon next call.
949 *
950 * This function was intentionnally designed to be called from
951 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
952 * within its state machine and use the same macros, hence the need for same
953 * labels and variable names.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]954 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]955const char *http_parse_reqline(struct http_msg *msg, const char *msg_buf, int state,
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]956 const char *ptr, const char *end,
957 char **ret_ptr, int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]958{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]959 __label__
960 http_msg_rqmeth,
961 http_msg_rqmeth_sp,
962 http_msg_rquri,
963 http_msg_rquri_sp,
964 http_msg_rqver,
965 http_msg_rqline_eol,
966 http_msg_ood, /* out of data */
967 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]968
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]969 switch (state) {
970 http_msg_rqmeth:
971 case HTTP_MSG_RQMETH:
972 if (likely(HTTP_IS_TOKEN(*ptr)))
973 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]974
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]975 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]976 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]977 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
978 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]979
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]980 if (likely(HTTP_IS_CRLF(*ptr))) {
981 /* HTTP 0.9 request */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]982 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]983 http_msg_req09_uri:
984 msg->sl.rq.u = ptr - msg_buf;
985 http_msg_req09_uri_e:
986 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
987 http_msg_req09_ver:
988 msg->sl.rq.v = ptr - msg_buf;
989 msg->sl.rq.v_l = 0;
990 goto http_msg_rqline_eol;
991 }
992 goto http_msg_invalid;
993
994 http_msg_rqmeth_sp:
995 case HTTP_MSG_RQMETH_SP:
996 if (likely(!HTTP_IS_LWS(*ptr))) {
997 msg->sl.rq.u = ptr - msg_buf;
998 goto http_msg_rquri;
999 }
1000 if (likely(HTTP_IS_SPHT(*ptr)))
1001 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1002 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1003 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1004
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1005 http_msg_rquri:
1006 case HTTP_MSG_RQURI:
1007 if (likely(!HTTP_IS_LWS(*ptr)))
1008 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1009
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1010 if (likely(HTTP_IS_SPHT(*ptr))) {
1011 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1012 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1013 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1014
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1015 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1016 goto http_msg_req09_uri_e;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1017
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1018 http_msg_rquri_sp:
1019 case HTTP_MSG_RQURI_SP:
1020 if (likely(!HTTP_IS_LWS(*ptr))) {
1021 msg->sl.rq.v = ptr - msg_buf;
1022 goto http_msg_rqver;
1023 }
1024 if (likely(HTTP_IS_SPHT(*ptr)))
1025 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1026 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1027 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1028
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1029 http_msg_rqver:
1030 case HTTP_MSG_RQVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1031 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1032 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1033
1034 if (likely(HTTP_IS_CRLF(*ptr))) {
1035 msg->sl.rq.v_l = (ptr - msg_buf) - msg->sl.rq.v;
1036 http_msg_rqline_eol:
1037 /* We have seen the end of line. Note that we do not
1038 * necessarily have the \n yet, but at least we know that we
1039 * have EITHER \r OR \n, otherwise the request would not be
1040 * complete. We can then record the request length and return
1041 * to the caller which will be able to register it.
1042 */
1043 msg->sl.rq.l = ptr - msg->sol;
1044 return ptr;
1045 }
1046
1047 /* neither an HTTP_VER token nor a CRLF */
1048 goto http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1049
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1050#ifdef DEBUG_FULL
1051 default:
1052 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1053 exit(1);
1054#endif
1055 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1056
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1057 http_msg_ood:
1058 /* out of data */
1059 if (ret_state)
1060 *ret_state = state;
1061 if (ret_ptr)
1062 *ret_ptr = (char *)ptr;
1063 return NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1064
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1065 http_msg_invalid:
1066 /* invalid message */
1067 if (ret_state)
1068 *ret_state = HTTP_MSG_ERROR;
1069 return NULL;
1070}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1071
1072
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1073/*
1074 * This function parses an HTTP message, either a request or a response,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1075 * depending on the initial msg->msg_state. It can be preempted everywhere
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1076 * when data are missing and recalled at the exact same location with no
1077 * information loss. The header index is re-initialized when switching from
1078 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH.
1079 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1080void http_msg_analyzer(struct buffer *buf, struct http_msg *msg, struct hdr_idx *idx)
1081{
1082 __label__
1083 http_msg_rqbefore,
1084 http_msg_rqbefore_cr,
1085 http_msg_rqmeth,
1086 http_msg_rqline_end,
1087 http_msg_hdr_first,
1088 http_msg_hdr_name,
1089 http_msg_hdr_l1_sp,
1090 http_msg_hdr_l1_lf,
1091 http_msg_hdr_l1_lws,
1092 http_msg_hdr_val,
1093 http_msg_hdr_l2_lf,
1094 http_msg_hdr_l2_lws,
1095 http_msg_complete_header,
1096 http_msg_last_lf,
1097 http_msg_ood, /* out of data */
1098 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1099
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1100 int state; /* updated only when leaving the FSM */
1101 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1102
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1103 state = msg->msg_state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1104 ptr = buf->lr;
1105 end = buf->r;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1106
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1107 if (unlikely(ptr >= end))
1108 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1109
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1110 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1111 /*
1112 * First, states that are specific to the response only.
1113 * We check them first so that request and headers are
1114 * closer to each other (accessed more often).
1115 */
1116 http_msg_rpbefore:
1117 case HTTP_MSG_RPBEFORE:
1118 if (likely(HTTP_IS_TOKEN(*ptr))) {
1119 if (likely(ptr == buf->data)) {
1120 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1121 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1122 } else {
1123#if PARSE_PRESERVE_EMPTY_LINES
1124 /* only skip empty leading lines, don't remove them */
1125 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1126 msg->som = ptr - buf->data;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1127#else
1128 /* Remove empty leading lines, as recommended by
1129 * RFC2616. This takes a lot of time because we
1130 * must move all the buffer backwards, but this
1131 * is rarely needed. The method above will be
1132 * cleaner when we'll be able to start sending
1133 * the request from any place in the buffer.
1134 */
1135 buf->lr = ptr;
1136 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1137 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1138 msg->sol = buf->data;
1139 ptr = buf->data;
1140 end = buf->r;
1141#endif
1142 }
1143 hdr_idx_init(idx);
1144 state = HTTP_MSG_RPVER;
1145 goto http_msg_rpver;
1146 }
1147
1148 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1149 goto http_msg_invalid;
1150
1151 if (unlikely(*ptr == '\n'))
1152 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1153 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1154 /* stop here */
1155
1156 http_msg_rpbefore_cr:
1157 case HTTP_MSG_RPBEFORE_CR:
1158 EXPECT_LF_HERE(ptr, http_msg_invalid);
1159 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1160 /* stop here */
1161
1162 http_msg_rpver:
1163 case HTTP_MSG_RPVER:
1164 case HTTP_MSG_RPVER_SP:
1165 case HTTP_MSG_RPCODE:
1166 case HTTP_MSG_RPCODE_SP:
1167 case HTTP_MSG_RPREASON:
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1168 ptr = (char *)http_parse_stsline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1169 &buf->lr, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1170 if (unlikely(!ptr))
1171 return;
1172
1173 /* we have a full response and we know that we have either a CR
1174 * or an LF at <ptr>.
1175 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1176 //fprintf(stderr,"som=%d rq.l=%d *ptr=0x%02x\n", msg->som, msg->sl.st.l, *ptr);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1177 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1178
1179 msg->sol = ptr;
1180 if (likely(*ptr == '\r'))
1181 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1182 goto http_msg_rpline_end;
1183
1184 http_msg_rpline_end:
1185 case HTTP_MSG_RPLINE_END:
1186 /* msg->sol must point to the first of CR or LF. */
1187 EXPECT_LF_HERE(ptr, http_msg_invalid);
1188 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1189 /* stop here */
1190
1191 /*
1192 * Second, states that are specific to the request only
1193 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1194 http_msg_rqbefore:
1195 case HTTP_MSG_RQBEFORE:
1196 if (likely(HTTP_IS_TOKEN(*ptr))) {
1197 if (likely(ptr == buf->data)) {
1198 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1199 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1200 } else {
1201#if PARSE_PRESERVE_EMPTY_LINES
1202 /* only skip empty leading lines, don't remove them */
1203 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1204 msg->som = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1205#else
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1206 /* Remove empty leading lines, as recommended by
1207 * RFC2616. This takes a lot of time because we
1208 * must move all the buffer backwards, but this
1209 * is rarely needed. The method above will be
1210 * cleaner when we'll be able to start sending
1211 * the request from any place in the buffer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1212 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1213 buf->lr = ptr;
1214 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1215 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1216 msg->sol = buf->data;
1217 ptr = buf->data;
1218 end = buf->r;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1219#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1220 }
Willy Tarreauf0d058e2007-01-25 12:03:42 +0100[diff] [blame]1221 /* we will need this when keep-alive will be supported
1222 hdr_idx_init(idx);
1223 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1224 state = HTTP_MSG_RQMETH;
1225 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1226 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1227
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1228 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1229 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1230
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1231 if (unlikely(*ptr == '\n'))
1232 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1233 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1234 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1235
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1236 http_msg_rqbefore_cr:
1237 case HTTP_MSG_RQBEFORE_CR:
1238 EXPECT_LF_HERE(ptr, http_msg_invalid);
1239 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1240 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1241
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1242 http_msg_rqmeth:
1243 case HTTP_MSG_RQMETH:
1244 case HTTP_MSG_RQMETH_SP:
1245 case HTTP_MSG_RQURI:
1246 case HTTP_MSG_RQURI_SP:
1247 case HTTP_MSG_RQVER:
1248 ptr = (char *)http_parse_reqline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1249 &buf->lr, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1250 if (unlikely(!ptr))
1251 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1252
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1253 /* we have a full request and we know that we have either a CR
1254 * or an LF at <ptr>.
1255 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1256 //fprintf(stderr,"som=%d rq.l=%d *ptr=0x%02x\n", msg->som, msg->sl.rq.l, *ptr);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1257 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1258
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1259 msg->sol = ptr;
1260 if (likely(*ptr == '\r'))
1261 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1262 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1263
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1264 http_msg_rqline_end:
1265 case HTTP_MSG_RQLINE_END:
1266 /* check for HTTP/0.9 request : no version information available.
1267 * msg->sol must point to the first of CR or LF.
1268 */
1269 if (unlikely(msg->sl.rq.v_l == 0))
1270 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1271
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1272 EXPECT_LF_HERE(ptr, http_msg_invalid);
1273 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1274 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1275
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1276 /*
1277 * Common states below
1278 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1279 http_msg_hdr_first:
1280 case HTTP_MSG_HDR_FIRST:
1281 msg->sol = ptr;
1282 if (likely(!HTTP_IS_CRLF(*ptr))) {
1283 goto http_msg_hdr_name;
1284 }
1285
1286 if (likely(*ptr == '\r'))
1287 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1288 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1289
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1290 http_msg_hdr_name:
1291 case HTTP_MSG_HDR_NAME:
1292 /* assumes msg->sol points to the first char */
1293 if (likely(HTTP_IS_TOKEN(*ptr)))
1294 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1295
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1296 if (likely(*ptr == ':')) {
1297 msg->col = ptr - buf->data;
1298 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
1299 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1300
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1301 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1302
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1303 http_msg_hdr_l1_sp:
1304 case HTTP_MSG_HDR_L1_SP:
1305 /* assumes msg->sol points to the first char and msg->col to the colon */
1306 if (likely(HTTP_IS_SPHT(*ptr)))
1307 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1308
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1309 /* header value can be basically anything except CR/LF */
1310 msg->sov = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1311
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1312 if (likely(!HTTP_IS_CRLF(*ptr))) {
1313 goto http_msg_hdr_val;
1314 }
1315
1316 if (likely(*ptr == '\r'))
1317 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1318 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1319
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1320 http_msg_hdr_l1_lf:
1321 case HTTP_MSG_HDR_L1_LF:
1322 EXPECT_LF_HERE(ptr, http_msg_invalid);
1323 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lws, HTTP_MSG_HDR_L1_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1324
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1325 http_msg_hdr_l1_lws:
1326 case HTTP_MSG_HDR_L1_LWS:
1327 if (likely(HTTP_IS_SPHT(*ptr))) {
1328 /* replace HT,CR,LF with spaces */
1329 for (; buf->data+msg->sov < ptr; msg->sov++)
1330 buf->data[msg->sov] = ' ';
1331 goto http_msg_hdr_l1_sp;
1332 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1333 /* we had a header consisting only in spaces ! */
1334 msg->eol = buf->data + msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1335 goto http_msg_complete_header;
1336
1337 http_msg_hdr_val:
1338 case HTTP_MSG_HDR_VAL:
1339 /* assumes msg->sol points to the first char, msg->col to the
1340 * colon, and msg->sov points to the first character of the
1341 * value.
1342 */
1343 if (likely(!HTTP_IS_CRLF(*ptr)))
1344 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1345
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1346 msg->eol = ptr;
1347 /* Note: we could also copy eol into ->eoh so that we have the
1348 * real header end in case it ends with lots of LWS, but is this
1349 * really needed ?
1350 */
1351 if (likely(*ptr == '\r'))
1352 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1353 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1354
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1355 http_msg_hdr_l2_lf:
1356 case HTTP_MSG_HDR_L2_LF:
1357 EXPECT_LF_HERE(ptr, http_msg_invalid);
1358 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lws, HTTP_MSG_HDR_L2_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1359
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1360 http_msg_hdr_l2_lws:
1361 case HTTP_MSG_HDR_L2_LWS:
1362 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1363 /* LWS: replace HT,CR,LF with spaces */
1364 for (; msg->eol < ptr; msg->eol++)
1365 *msg->eol = ' ';
1366 goto http_msg_hdr_val;
1367 }
1368 http_msg_complete_header:
1369 /*
1370 * It was a new header, so the last one is finished.
1371 * Assumes msg->sol points to the first char, msg->col to the
1372 * colon, msg->sov points to the first character of the value
1373 * and msg->eol to the first CR or LF so we know how the line
1374 * ends. We insert last header into the index.
1375 */
1376 /*
1377 fprintf(stderr,"registering %-2d bytes : ", msg->eol - msg->sol);
1378 write(2, msg->sol, msg->eol-msg->sol);
1379 fprintf(stderr,"\n");
1380 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1381
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1382 if (unlikely(hdr_idx_add(msg->eol - msg->sol, *msg->eol == '\r',
1383 idx, idx->tail) < 0))
1384 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1385
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1386 msg->sol = ptr;
1387 if (likely(!HTTP_IS_CRLF(*ptr))) {
1388 goto http_msg_hdr_name;
1389 }
1390
1391 if (likely(*ptr == '\r'))
1392 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1393 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1394
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1395 http_msg_last_lf:
1396 case HTTP_MSG_LAST_LF:
1397 /* Assumes msg->sol points to the first of either CR or LF */
1398 EXPECT_LF_HERE(ptr, http_msg_invalid);
1399 ptr++;
1400 buf->lr = ptr;
1401 msg->eoh = msg->sol - buf->data;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1402 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1403 return;
1404#ifdef DEBUG_FULL
1405 default:
1406 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1407 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1408#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1409 }
1410 http_msg_ood:
1411 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1412 msg->msg_state = state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1413 buf->lr = ptr;
1414 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1415
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1416 http_msg_invalid:
1417 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1418 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1419 return;
1420}
1421
1422/*
1423 * manages the client FSM and its socket. BTW, it also tries to handle the
1424 * cookie. It returns 1 if a state has changed (and a resync may be needed),
1425 * 0 else.
1426 */
1427int process_cli(struct session *t)
1428{
1429 int s = t->srv_state;
1430 int c = t->cli_state;
1431 struct buffer *req = t->req;
1432 struct buffer *rep = t->rep;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1433
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1434 DPRINTF(stderr,"process_cli: c=%s s=%s set(r,w)=%d,%d exp(r,w)=%d.%d,%d.%d\n",
1435 cli_stnames[c], srv_stnames[s],
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1436 EV_FD_ISSET(t->cli_fd, DIR_RD), EV_FD_ISSET(t->cli_fd, DIR_WR),
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1437 req->rex.tv_sec, req->rex.tv_usec,
1438 rep->wex.tv_sec, rep->wex.tv_usec);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1439
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1440 if (c == CL_STHEADERS) {
1441 /*
1442 * Now parse the partial (or complete) lines.
1443 * We will check the request syntax, and also join multi-line
1444 * headers. An index of all the lines will be elaborated while
1445 * parsing.
1446 *
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1447 * For the parsing, we use a 28 states FSM.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1448 *
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1449 * Here is the information we currently have :
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1450 * req->data + req->som = beginning of request
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1451 * req->data + req->eoh = end of processed headers / start of current one
1452 * req->data + req->eol = end of current header or line (LF or CRLF)
1453 * req->lr = first non-visited byte
1454 * req->r = end of data
1455 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1456
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1457 int cur_idx;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1458 struct http_txn *txn = &t->txn;
1459 struct http_msg *msg = &txn->req;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1460 struct proxy *cur_proxy;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1461
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1462 if (likely(req->lr < req->r))
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1463 http_msg_analyzer(req, msg, &txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1464
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1465 /* 1: we might have to print this header in debug mode */
1466 if (unlikely((global.mode & MODE_DEBUG) &&
1467 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1468 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1469 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1470
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1471 sol = req->data + msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1472 eol = sol + msg->sl.rq.l;
1473 debug_hdr("clireq", t, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1474
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1475 sol += hdr_idx_first_pos(&txn->hdr_idx);
1476 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1477
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1478 while (cur_idx) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1479 eol = sol + txn->hdr_idx.v[cur_idx].len;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1480 debug_hdr("clihdr", t, sol, eol);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1481 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
1482 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1483 }
1484 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1485
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1486
1487 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1488 * Now we quickly check if we have found a full valid request.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1489 * If not so, we check the FD and buffer states before leaving.
1490 * A full request is indicated by the fact that we have seen
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1491 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
1492 * requests are checked first.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1493 *
1494 */
1495
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1496 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1497 /*
1498 * First, let's catch bad requests.
1499 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1500 if (unlikely(msg->msg_state == HTTP_MSG_ERROR))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1501 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1502
1503 /* 1: Since we are in header mode, if there's no space
1504 * left for headers, we won't be able to free more
1505 * later, so the session will never terminate. We
1506 * must terminate it now.
1507 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1508 if (unlikely(req->l >= req->rlim - req->data)) {
1509 /* FIXME: check if URI is set and return Status
1510 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1511 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1512 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1513 }
1514
1515 /* 2: have we encountered a read error or a close ? */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1516 else if (unlikely(req->flags & (BF_READ_ERROR | BF_READ_NULL))) {
1517 /* read error, or last read : give up. */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1518 tv_eternity(&req->rex);
1519 fd_delete(t->cli_fd);
1520 t->cli_state = CL_STCLOSE;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]1521 t->fe->failed_req++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1522 if (!(t->flags & SN_ERR_MASK))
1523 t->flags |= SN_ERR_CLICL;
1524 if (!(t->flags & SN_FINST_MASK))
1525 t->flags |= SN_FINST_R;
1526 return 1;
1527 }
1528
1529 /* 3: has the read timeout expired ? */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1530 else if (unlikely(tv_cmp2_ms(&req->rex, &now) <= 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1531 /* read timeout : give up with an error message. */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1532 txn->status = 408;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1533 client_retnclose(t, error_message(t, HTTP_ERR_408));
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]1534 t->fe->failed_req++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1535 if (!(t->flags & SN_ERR_MASK))
1536 t->flags |= SN_ERR_CLITO;
1537 if (!(t->flags & SN_FINST_MASK))
1538 t->flags |= SN_FINST_R;
1539 return 1;
1540 }
1541
1542 /* 4: do we need to re-enable the read socket ? */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]1543 else if (unlikely(EV_FD_COND_S(t->cli_fd, DIR_RD))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1544 /* fd in DIR_RD was disabled, perhaps because of a previous buffer
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1545 * full. We cannot loop here since stream_sock_read will disable it only if
1546 * req->l == rlim-data
1547 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1548 if (t->fe->clitimeout)
1549 tv_delayfrom(&req->rex, &now, t->fe->clitimeout);
1550 else
1551 tv_eternity(&req->rex);
1552 }
1553 return t->cli_state != CL_STHEADERS;
1554 }
1555
1556
1557 /****************************************************************
1558 * More interesting part now : we know that we have a complete *
1559 * request which at least looks like HTTP. We have an indicator *
1560 * of each header's length, so we can parse them quickly. *
1561 ****************************************************************/
1562
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1563 /*
1564 * 1: identify the method
1565 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1566 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1567
1568 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1569 * 2: check if the URI matches the monitor_uri.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1570 * We have to do this for every request which gets in, because
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1571 * the monitor-uri is defined by the frontend.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1572 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1573 if (unlikely((t->fe->monitor_uri_len != 0) &&
1574 (t->fe->monitor_uri_len == msg->sl.rq.u_l) &&
1575 !memcmp(&req->data[msg->sl.rq.u],
1576 t->fe->monitor_uri,
1577 t->fe->monitor_uri_len))) {
1578 /*
1579 * We have found the monitor URI
1580 */
1581 t->flags |= SN_MONITOR;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1582 txn->status = 200;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1583 client_retnclose(t, &http_200_chunk);
1584 goto return_prx_cond;
1585 }
1586
1587 /*
1588 * 3: Maybe we have to copy the original REQURI for the logs ?
1589 * Note: we cannot log anymore if the request has been
1590 * classified as invalid.
1591 */
1592 if (unlikely(t->logs.logwait & LW_REQ)) {
1593 /* we have a complete HTTP request that we must log */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1594 if ((txn->uri = pool_alloc(requri)) != NULL) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1595 int urilen = msg->sl.rq.l;
1596
1597 if (urilen >= REQURI_LEN)
1598 urilen = REQURI_LEN - 1;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1599 memcpy(txn->uri, &req->data[msg->som], urilen);
1600 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1601
1602 if (!(t->logs.logwait &= ~LW_REQ))
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1603 http_sess_log(t);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1604 } else {
1605 Alert("HTTP logging : out of memory.\n");
1606 }
1607 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1608
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1609
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1610 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
1611 if (unlikely(msg->sl.rq.v_l == 0)) {
1612 int delta;
1613 char *cur_end;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1614 msg->sol = req->data + msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1615 cur_end = msg->sol + msg->sl.rq.l;
1616 delta = 0;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1617
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1618 if (msg->sl.rq.u_l == 0) {
1619 /* if no URI was set, add "/" */
1620 delta = buffer_replace2(req, cur_end, cur_end, " /", 2);
1621 cur_end += delta;
1622 msg->eoh += delta;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1623 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1624 /* add HTTP version */
1625 delta = buffer_replace2(req, cur_end, cur_end, " HTTP/1.0\r\n", 11);
1626 msg->eoh += delta;
1627 cur_end += delta;
1628 cur_end = (char *)http_parse_reqline(msg, req->data,
1629 HTTP_MSG_RQMETH,
1630 msg->sol, cur_end + 1,
1631 NULL, NULL);
1632 if (unlikely(!cur_end))
1633 goto return_bad_req;
1634
1635 /* we have a full HTTP/1.0 request now and we know that
1636 * we have either a CR or an LF at <ptr>.
1637 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1638 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1639 }
1640
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1641
1642 /* 5: we may need to capture headers */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1643 if (unlikely((t->logs.logwait & LW_REQHDR) && t->fe->req_cap))
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1644 capture_headers(req->data + msg->som, &txn->hdr_idx,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1645 txn->req.cap, t->fe->req_cap);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1646
1647 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1648 * 6: we will have to evaluate the filters.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1649 * As opposed to version 1.2, now they will be evaluated in the
1650 * filters order and not in the header order. This means that
1651 * each filter has to be validated among all headers.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1652 *
1653 * We can now check whether we want to switch to another
1654 * backend, in which case we will re-check the backend's
1655 * filters and various options. In order to support 3-level
1656 * switching, here's how we should proceed :
1657 *
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1658 * a) run be.
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1659 * if (switch) then switch ->be to the new backend.
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1660 * b) run be if (be != fe).
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1661 * There cannot be any switch from there, so ->be cannot be
1662 * changed anymore.
1663 *
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1664 * => filters always apply to ->be, then ->be may change.
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1665 *
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1666 * The response path will be able to apply either ->be, or
1667 * ->be then ->fe filters in order to match the reverse of
1668 * the forward sequence.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1669 */
1670
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1671 do {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1672 struct proxy *rule_set = t->be;
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1673 cur_proxy = t->be;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1674
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1675 /* try headers filters */
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1676 if (rule_set->req_exp != NULL) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1677 if (apply_filters_to_request(t, req, rule_set->req_exp) < 0)
1678 goto return_bad_req;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1679 }
1680
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1681 if (!(t->flags & SN_BE_ASSIGNED) && (t->be != cur_proxy)) {
1682 /* to ensure correct connection accounting on
1683 * the backend, we count the connection for the
1684 * one managing the queue.
1685 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1686 t->be->beconn++;
1687 if (t->be->beconn > t->be->beconn_max)
1688 t->be->beconn_max = t->be->beconn;
1689 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1690 t->flags |= SN_BE_ASSIGNED;
1691 }
1692
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1693 /* has the request been denied ? */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]1694 if (txn->flags & TX_CLDENY) {
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1695 /* no need to go further */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1696 txn->status = 403;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1697 /* let's log the request time */
1698 t->logs.t_request = tv_diff(&t->logs.tv_accept, &now);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1699 client_retnclose(t, error_message(t, HTTP_ERR_403));
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1700 goto return_prx_cond;
1701 }
1702
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1703 /* We might have to check for "Connection:" */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1704 if (((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1705 !(t->flags & SN_CONN_CLOSED)) {
1706 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1707 int cur_idx, old_idx, delta, val;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1708 struct hdr_idx_elem *cur_hdr;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1709
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1710 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1711 old_idx = 0;
1712
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1713 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
1714 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1715 cur_ptr = cur_next;
1716 cur_end = cur_ptr + cur_hdr->len;
1717 cur_next = cur_end + cur_hdr->cr + 1;
1718
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1719 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
1720 if (val) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1721 /* 3 possibilities :
1722 * - we have already set Connection: close,
1723 * so we remove this line.
1724 * - we have not yet set Connection: close,
1725 * but this line indicates close. We leave
1726 * it untouched and set the flag.
1727 * - we have not yet set Connection: close,
1728 * and this line indicates non-close. We
1729 * replace it.
1730 */
1731 if (t->flags & SN_CONN_CLOSED) {
1732 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1733 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1734 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1735 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
1736 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1737 cur_hdr->len = 0;
1738 } else {
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1739 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
1740 delta = buffer_replace2(req, cur_ptr + val, cur_end,
1741 "close", 5);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1742 cur_next += delta;
1743 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1744 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1745 }
1746 t->flags |= SN_CONN_CLOSED;
1747 }
1748 }
1749 old_idx = cur_idx;
1750 }
Willy Tarreauf2f0ee82007-03-30 12:02:43 +0200[diff] [blame]1751 }
1752 /* add request headers from the rule sets in the same order */
1753 for (cur_idx = 0; cur_idx < rule_set->nb_reqadd; cur_idx++) {
1754 if (unlikely(http_header_add_tail(req,
1755 &txn->req,
1756 &txn->hdr_idx,
1757 rule_set->req_add[cur_idx])) < 0)
1758 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1759 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]1760
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1761 /* check if stats URI was requested, and if an auth is needed */
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]1762 if (rule_set->uri_auth != NULL &&
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1763 (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)) {
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]1764 /* we have to check the URI and auth for this request */
1765 if (stats_check_uri_auth(t, rule_set))
1766 return 1;
1767 }
1768
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]1769 if (!(t->flags & SN_BE_ASSIGNED) && cur_proxy->defbe.be) {
1770 /* No backend was set, but there was a default
1771 * backend set in the frontend, so we use it and
1772 * loop again.
1773 */
1774 t->be = cur_proxy->defbe.be;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1775 t->be->beconn++;
1776 if (t->be->beconn > t->be->beconn_max)
1777 t->be->beconn_max = t->be->beconn;
1778 t->be->cum_beconn++;
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]1779 t->flags |= SN_BE_ASSIGNED;
1780 }
1781 } while (t->be != cur_proxy); /* we loop only if t->be has changed */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1782
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1783
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1784 if (!(t->flags & SN_BE_ASSIGNED)) {
1785 /* To ensure correct connection accounting on
1786 * the backend, we count the connection for the
1787 * one managing the queue.
1788 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1789 t->be->beconn++;
1790 if (t->be->beconn > t->be->beconn_max)
1791 t->be->beconn_max = t->be->beconn;
1792 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1793 t->flags |= SN_BE_ASSIGNED;
1794 }
1795
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1796 /*
1797 * Right now, we know that we have processed the entire headers
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1798 * and that unwanted requests have been filtered out. We can do
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1799 * whatever we want with the remaining request. Also, now we
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1800 * may have separate values for ->fe, ->be.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1801 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1802
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1803
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1804
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1805
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1806 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1807 * 7: the appsession cookie was looked up very early in 1.2,
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1808 * so let's do the same now.
1809 */
1810
1811 /* It needs to look into the URI */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1812 if (t->be->appsession_name) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1813 get_srv_from_appsession(t, &req->data[msg->som], msg->sl.rq.l);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1814 }
1815
1816
1817 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1818 * 8: Now we can work with the cookies.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1819 * Note that doing so might move headers in the request, but
1820 * the fields will stay coherent and the URI will not move.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1821 * This should only be performed in the backend.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1822 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]1823 if (!(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1824 manage_client_side_cookies(t, req);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1825
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1826
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1827 /*
Willy Tarreaubb046ac2007-03-03 19:17:03 +0100[diff] [blame]1828 * 9: add X-Forwarded-For if either the frontend or the backend
1829 * asks for it.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1830 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1831 if ((t->fe->options | t->be->options) & PR_O_FWDFOR) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1832 if (t->cli_addr.ss_family == AF_INET) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1833 /* Add an X-Forwarded-For header unless the source IP is
1834 * in the 'except' network range.
1835 */
1836 if ((!t->fe->except_mask.s_addr ||
1837 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->fe->except_mask.s_addr)
1838 != t->fe->except_net.s_addr) &&
1839 (!t->be->except_mask.s_addr ||
1840 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->be->except_mask.s_addr)
1841 != t->be->except_net.s_addr)) {
1842 int len;
1843 unsigned char *pn;
1844 pn = (unsigned char *)&((struct sockaddr_in *)&t->cli_addr)->sin_addr;
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1845
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1846 len = sprintf(trash, "X-Forwarded-For: %d.%d.%d.%d",
1847 pn[0], pn[1], pn[2], pn[3]);
1848
1849 if (unlikely(http_header_add_tail2(req, &txn->req,
1850 &txn->hdr_idx, trash, len)) < 0)
1851 goto return_bad_req;
1852 }
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1853 }
1854 else if (t->cli_addr.ss_family == AF_INET6) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1855 /* FIXME: for the sake of completeness, we should also support
1856 * 'except' here, although it is mostly useless in this case.
1857 */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1858 int len;
1859 char pn[INET6_ADDRSTRLEN];
1860 inet_ntop(AF_INET6,
1861 (const void *)&((struct sockaddr_in6 *)(&t->cli_addr))->sin6_addr,
1862 pn, sizeof(pn));
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]1863 len = sprintf(trash, "X-Forwarded-For: %s", pn);
1864 if (unlikely(http_header_add_tail2(req, &txn->req,
1865 &txn->hdr_idx, trash, len)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1866 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1867 }
1868 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1869
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1870 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1871 * 10: add "Connection: close" if needed and not yet set.
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]1872 * Note that we do not need to add it in case of HTTP/1.0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]1873 */
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]1874 if (!(t->flags & SN_CONN_CLOSED) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1875 ((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE)) {
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]1876 if ((unlikely(msg->sl.rq.v_l != 8) ||
1877 unlikely(req->data[msg->som + msg->sl.rq.v + 7] != '0')) &&
1878 unlikely(http_header_add_tail2(req, &txn->req, &txn->hdr_idx,
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]1879 "Connection: close", 17)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1880 goto return_bad_req;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1881 t->flags |= SN_CONN_CLOSED;
Willy Tarreaue15d9132006-12-14 22:26:42 +0100[diff] [blame]1882 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1883
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1884 /*************************************************************
1885 * OK, that's finished for the headers. We have done what we *
1886 * could. Let's switch to the DATA state. *
1887 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1888
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1889 t->cli_state = CL_STDATA;
1890 req->rlim = req->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1891
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1892 t->logs.t_request = tv_diff(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1893
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1894 if (!t->fe->clitimeout ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1895 (t->srv_state < SV_STDATA && t->be->srvtimeout)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1896 /* If the client has no timeout, or if the server is not ready yet,
1897 * and we know for sure that it can expire, then it's cleaner to
1898 * disable the timeout on the client side so that too low values
1899 * cannot make the sessions abort too early.
1900 *
1901 * FIXME-20050705: the server needs a way to re-enable this time-out
1902 * when it switches its state, otherwise a client can stay connected
1903 * indefinitely. This now seems to be OK.
1904 */
1905 tv_eternity(&req->rex);
1906 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1907
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1908 /* When a connection is tarpitted, we use the queue timeout for the
1909 * tarpit delay, which currently happens to be the server's connect
1910 * timeout. If unset, then set it to zero because we really want it
1911 * to expire at one moment.
1912 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]1913 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1914 t->req->l = 0;
1915 /* flush the request so that we can drop the connection early
1916 * if the client closes first.
1917 */
1918 tv_delayfrom(&req->cex, &now,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1919 t->be->contimeout ? t->be->contimeout : 0);
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1920 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1921
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1922 /* OK let's go on with the BODY now */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1923 goto process_data;
1924
1925 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1926 txn->req.msg_state = HTTP_MSG_ERROR;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1927 txn->status = 400;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1928 client_retnclose(t, error_message(t, HTTP_ERR_400));
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]1929 t->fe->failed_req++;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1930 return_prx_cond:
1931 if (!(t->flags & SN_ERR_MASK))
1932 t->flags |= SN_ERR_PRXCOND;
1933 if (!(t->flags & SN_FINST_MASK))
1934 t->flags |= SN_FINST_R;
1935 return 1;
1936
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1937 }
1938 else if (c == CL_STDATA) {
1939 process_data:
1940 /* FIXME: this error handling is partly buggy because we always report
1941 * a 'DATA' phase while we don't know if the server was in IDLE, CONN
1942 * or HEADER phase. BTW, it's not logical to expire the client while
1943 * we're waiting for the server to connect.
1944 */
1945 /* read or write error */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]1946 if (rep->flags & BF_WRITE_ERROR || req->flags & BF_READ_ERROR) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]1947 tv_eternity(&req->rex);
1948 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1949 fd_delete(t->cli_fd);
1950 t->cli_state = CL_STCLOSE;
1951 if (!(t->flags & SN_ERR_MASK))
1952 t->flags |= SN_ERR_CLICL;
1953 if (!(t->flags & SN_FINST_MASK)) {
1954 if (t->pend_pos)
1955 t->flags |= SN_FINST_Q;
1956 else if (s == SV_STCONN)
1957 t->flags |= SN_FINST_C;
1958 else
1959 t->flags |= SN_FINST_D;
1960 }
1961 return 1;
1962 }
1963 /* last read, or end of server write */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]1964 else if (req->flags & BF_READ_NULL || s == SV_STSHUTW || s == SV_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1965 EV_FD_CLR(t->cli_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]1966 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1967 shutdown(t->cli_fd, SHUT_RD);
1968 t->cli_state = CL_STSHUTR;
1969 return 1;
1970 }
1971 /* last server read and buffer empty */
1972 else if ((s == SV_STSHUTR || s == SV_STCLOSE) && (rep->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1973 EV_FD_CLR(t->cli_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]1974 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1975 shutdown(t->cli_fd, SHUT_WR);
1976 /* We must ensure that the read part is still alive when switching
1977 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1978 EV_FD_SET(t->cli_fd, DIR_RD);
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]1979 if (t->fe->clitimeout)
1980 tv_delayfrom(&req->rex, &now, t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1981 t->cli_state = CL_STSHUTW;
1982 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
1983 return 1;
1984 }
1985 /* read timeout */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]1986 else if (tv_cmp2_ms(&req->rex, &now) <= 0) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1987 EV_FD_CLR(t->cli_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]1988 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1989 shutdown(t->cli_fd, SHUT_RD);
1990 t->cli_state = CL_STSHUTR;
1991 if (!(t->flags & SN_ERR_MASK))
1992 t->flags |= SN_ERR_CLITO;
1993 if (!(t->flags & SN_FINST_MASK)) {
1994 if (t->pend_pos)
1995 t->flags |= SN_FINST_Q;
1996 else if (s == SV_STCONN)
1997 t->flags |= SN_FINST_C;
1998 else
1999 t->flags |= SN_FINST_D;
2000 }
2001 return 1;
2002 }
2003 /* write timeout */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2004 else if (tv_cmp2_ms(&rep->wex, &now) <= 0) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2005 EV_FD_CLR(t->cli_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2006 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2007 shutdown(t->cli_fd, SHUT_WR);
2008 /* We must ensure that the read part is still alive when switching
2009 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2010 EV_FD_SET(t->cli_fd, DIR_RD);
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2011 if (t->fe->clitimeout)
2012 tv_delayfrom(&req->rex, &now, t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2013
2014 t->cli_state = CL_STSHUTW;
2015 if (!(t->flags & SN_ERR_MASK))
2016 t->flags |= SN_ERR_CLITO;
2017 if (!(t->flags & SN_FINST_MASK)) {
2018 if (t->pend_pos)
2019 t->flags |= SN_FINST_Q;
2020 else if (s == SV_STCONN)
2021 t->flags |= SN_FINST_C;
2022 else
2023 t->flags |= SN_FINST_D;
2024 }
2025 return 1;
2026 }
2027
2028 if (req->l >= req->rlim - req->data) {
2029 /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]2030 if (EV_FD_COND_C(t->cli_fd, DIR_RD)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2031 /* stop reading until we get some space */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2032 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2033 }
2034 } else {
2035 /* there's still some space in the buffer */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]2036 if (EV_FD_COND_S(t->cli_fd, DIR_RD)) {
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2037 if (!t->fe->clitimeout ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2038 (t->srv_state < SV_STDATA && t->be->srvtimeout))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2039 /* If the client has no timeout, or if the server not ready yet, and we
2040 * know for sure that it can expire, then it's cleaner to disable the
2041 * timeout on the client side so that too low values cannot make the
2042 * sessions abort too early.
2043 */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2044 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2045 else
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2046 tv_delayfrom(&req->rex, &now, t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2047 }
2048 }
2049
2050 if ((rep->l == 0) ||
2051 ((s < SV_STDATA) /* FIXME: this may be optimized && (rep->w == rep->h)*/)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]2052 if (EV_FD_COND_C(t->cli_fd, DIR_WR)) {
2053 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2054 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2055 }
2056 } else {
2057 /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]2058 if (EV_FD_COND_S(t->cli_fd, DIR_WR)) {
2059 /* restart writing */
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2060 if (t->fe->clitimeout) {
2061 tv_delayfrom(&rep->wex, &now, t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2062 /* FIXME: to prevent the client from expiring read timeouts during writes,
2063 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2064 req->rex = rep->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2065 }
2066 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2067 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2068 }
2069 }
2070 return 0; /* other cases change nothing */
2071 }
2072 else if (c == CL_STSHUTR) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2073 if (rep->flags & BF_WRITE_ERROR) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2074 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2075 fd_delete(t->cli_fd);
2076 t->cli_state = CL_STCLOSE;
2077 if (!(t->flags & SN_ERR_MASK))
2078 t->flags |= SN_ERR_CLICL;
2079 if (!(t->flags & SN_FINST_MASK)) {
2080 if (t->pend_pos)
2081 t->flags |= SN_FINST_Q;
2082 else if (s == SV_STCONN)
2083 t->flags |= SN_FINST_C;
2084 else
2085 t->flags |= SN_FINST_D;
2086 }
2087 return 1;
2088 }
2089 else if ((s == SV_STSHUTR || s == SV_STCLOSE) && (rep->l == 0)
2090 && !(t->flags & SN_SELF_GEN)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2091 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2092 fd_delete(t->cli_fd);
2093 t->cli_state = CL_STCLOSE;
2094 return 1;
2095 }
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2096 else if (tv_cmp2_ms(&rep->wex, &now) <= 0) {
2097 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2098 fd_delete(t->cli_fd);
2099 t->cli_state = CL_STCLOSE;
2100 if (!(t->flags & SN_ERR_MASK))
2101 t->flags |= SN_ERR_CLITO;
2102 if (!(t->flags & SN_FINST_MASK)) {
2103 if (t->pend_pos)
2104 t->flags |= SN_FINST_Q;
2105 else if (s == SV_STCONN)
2106 t->flags |= SN_FINST_C;
2107 else
2108 t->flags |= SN_FINST_D;
2109 }
2110 return 1;
2111 }
2112
2113 if (t->flags & SN_SELF_GEN) {
2114 produce_content(t);
2115 if (rep->l == 0) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2116 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2117 fd_delete(t->cli_fd);
2118 t->cli_state = CL_STCLOSE;
2119 return 1;
2120 }
2121 }
2122
2123 if ((rep->l == 0)
2124 || ((s == SV_STHEADERS) /* FIXME: this may be optimized && (rep->w == rep->h)*/)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]2125 if (EV_FD_COND_C(t->cli_fd, DIR_WR)) {
2126 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2127 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2128 }
2129 } else {
2130 /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]2131 if (EV_FD_COND_S(t->cli_fd, DIR_WR)) {
2132 /* restart writing */
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2133 if (t->fe->clitimeout) {
2134 tv_delayfrom(&rep->wex, &now, t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2135 /* FIXME: to prevent the client from expiring read timeouts during writes,
2136 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2137 req->rex = rep->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2138 }
2139 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2140 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2141 }
2142 }
2143 return 0;
2144 }
2145 else if (c == CL_STSHUTW) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2146 if (req->flags & BF_READ_ERROR) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2147 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2148 fd_delete(t->cli_fd);
2149 t->cli_state = CL_STCLOSE;
2150 if (!(t->flags & SN_ERR_MASK))
2151 t->flags |= SN_ERR_CLICL;
2152 if (!(t->flags & SN_FINST_MASK)) {
2153 if (t->pend_pos)
2154 t->flags |= SN_FINST_Q;
2155 else if (s == SV_STCONN)
2156 t->flags |= SN_FINST_C;
2157 else
2158 t->flags |= SN_FINST_D;
2159 }
2160 return 1;
2161 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2162 else if (req->flags & BF_READ_NULL || s == SV_STSHUTW || s == SV_STCLOSE) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2163 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2164 fd_delete(t->cli_fd);
2165 t->cli_state = CL_STCLOSE;
2166 return 1;
2167 }
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2168 else if (tv_cmp2_ms(&req->rex, &now) <= 0) {
2169 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2170 fd_delete(t->cli_fd);
2171 t->cli_state = CL_STCLOSE;
2172 if (!(t->flags & SN_ERR_MASK))
2173 t->flags |= SN_ERR_CLITO;
2174 if (!(t->flags & SN_FINST_MASK)) {
2175 if (t->pend_pos)
2176 t->flags |= SN_FINST_Q;
2177 else if (s == SV_STCONN)
2178 t->flags |= SN_FINST_C;
2179 else
2180 t->flags |= SN_FINST_D;
2181 }
2182 return 1;
2183 }
2184 else if (req->l >= req->rlim - req->data) {
2185 /* no room to read more data */
2186
2187 /* FIXME-20050705: is it possible for a client to maintain a session
2188 * after the timeout by sending more data after it receives a close ?
2189 */
2190
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]2191 if (EV_FD_COND_C(t->cli_fd, DIR_RD)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2192 /* stop reading until we get some space */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2193 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2194 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2195 }
2196 } else {
2197 /* there's still some space in the buffer */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]2198 if (EV_FD_COND_S(t->cli_fd, DIR_RD)) {
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2199 if (t->fe->clitimeout)
2200 tv_delayfrom(&req->rex, &now, t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2201 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2202 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2203 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2204 }
2205 }
2206 return 0;
2207 }
2208 else { /* CL_STCLOSE: nothing to do */
2209 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
2210 int len;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2211 len = sprintf(trash, "%08x:%s.clicls[%04x:%04x]\n", t->uniq_id, t->be->id, (unsigned short)t->cli_fd, (unsigned short)t->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2212 write(1, trash, len);
2213 }
2214 return 0;
2215 }
2216 return 0;
2217}
2218
2219
2220/*
2221 * manages the server FSM and its socket. It returns 1 if a state has changed
2222 * (and a resync may be needed), 0 else.
2223 */
2224int process_srv(struct session *t)
2225{
2226 int s = t->srv_state;
2227 int c = t->cli_state;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2228 struct http_txn *txn = &t->txn;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2229 struct buffer *req = t->req;
2230 struct buffer *rep = t->rep;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2231 int conn_err;
2232
2233#ifdef DEBUG_FULL
2234 fprintf(stderr,"process_srv: c=%s, s=%s\n", cli_stnames[c], srv_stnames[s]);
2235#endif
2236 //fprintf(stderr,"process_srv: c=%d, s=%d, cr=%d, cw=%d, sr=%d, sw=%d\n", c, s,
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2237 //EV_FD_ISSET(t->cli_fd, DIR_RD), EV_FD_ISSET(t->cli_fd, DIR_WR),
2238 //EV_FD_ISSET(t->srv_fd, DIR_RD), EV_FD_ISSET(t->srv_fd, DIR_WR)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2239 //);
2240 if (s == SV_STIDLE) {
2241 if (c == CL_STHEADERS)
2242 return 0; /* stay in idle, waiting for data to reach the client side */
2243 else if (c == CL_STCLOSE || c == CL_STSHUTW ||
2244 (c == CL_STSHUTR &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2245 (t->req->l == 0 || t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2246 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2247 if (t->pend_pos)
2248 t->logs.t_queue = tv_diff(&t->logs.tv_accept, &now);
2249 /* note that this must not return any error because it would be able to
2250 * overwrite the client_retnclose() output.
2251 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2252 if (txn->flags & TX_CLTARPIT)
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2253 srv_close_with_err(t, SN_ERR_CLICL, SN_FINST_T, 0, NULL);
Willy Tarreau08fa2e32006-09-03 10:47:37 +0200[diff] [blame]2254 else
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2255 srv_close_with_err(t, SN_ERR_CLICL, t->pend_pos ? SN_FINST_Q : SN_FINST_C, 0, NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2256
2257 return 1;
2258 }
2259 else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2260 if (txn->flags & TX_CLTARPIT) {
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2261 /* This connection is being tarpitted. The CLIENT side has
2262 * already set the connect expiration date to the right
2263 * timeout. We just have to check that it has not expired.
2264 */
2265 if (tv_cmp2_ms(&req->cex, &now) > 0)
2266 return 0;
2267
2268 /* We will set the queue timer to the time spent, just for
2269 * logging purposes. We fake a 500 server error, so that the
2270 * attacker will not suspect his connection has been tarpitted.
2271 * It will not cause trouble to the logs because we can exclude
2272 * the tarpitted connections by filtering on the 'PT' status flags.
2273 */
2274 tv_eternity(&req->cex);
2275 t->logs.t_queue = tv_diff(&t->logs.tv_accept, &now);
2276 srv_close_with_err(t, SN_ERR_PRXCOND, SN_FINST_T,
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2277 500, error_message(t, HTTP_ERR_500));
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2278 return 1;
2279 }
2280
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2281 /* Right now, we will need to create a connection to the server.
2282 * We might already have tried, and got a connection pending, in
2283 * which case we will not do anything till it's pending. It's up
2284 * to any other session to release it and wake us up again.
2285 */
2286 if (t->pend_pos) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2287 if (tv_cmp2_ms(&req->cex, &now) > 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2288 return 0;
2289 else {
2290 /* we've been waiting too long here */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2291 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2292 t->logs.t_queue = tv_diff(&t->logs.tv_accept, &now);
2293 srv_close_with_err(t, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2294 503, error_message(t, HTTP_ERR_503));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2295 if (t->srv)
2296 t->srv->failed_conns++;
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2297 t->fe->failed_conns++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2298 return 1;
2299 }
2300 }
2301
2302 do {
2303 /* first, get a connection */
2304 if (srv_redispatch_connect(t))
2305 return t->srv_state != SV_STIDLE;
2306
2307 /* try to (re-)connect to the server, and fail if we expire the
2308 * number of retries.
2309 */
2310 if (srv_retryable_connect(t)) {
2311 t->logs.t_queue = tv_diff(&t->logs.tv_accept, &now);
2312 return t->srv_state != SV_STIDLE;
2313 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2314 } while (1);
2315 }
2316 }
2317 else if (s == SV_STCONN) { /* connection in progress */
2318 if (c == CL_STCLOSE || c == CL_STSHUTW ||
2319 (c == CL_STSHUTR &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2320 (t->req->l == 0 || t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2321 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2322 fd_delete(t->srv_fd);
2323 if (t->srv)
2324 t->srv->cur_sess--;
2325
2326 /* note that this must not return any error because it would be able to
2327 * overwrite the client_retnclose() output.
2328 */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2329 srv_close_with_err(t, SN_ERR_CLICL, SN_FINST_C, 0, NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2330 return 1;
2331 }
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2332 if (!(req->flags & BF_WRITE_STATUS) && tv_cmp2_ms(&req->cex, &now) > 0) {
2333 //fprintf(stderr,"1: c=%d, s=%d, now=%d.%06d, exp=%d.%06d\n", c, s, now.tv_sec, now.tv_usec, req->cex.tv_sec, req->cex.tv_usec);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2334 return 0; /* nothing changed */
2335 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2336 else if (!(req->flags & BF_WRITE_STATUS) || (req->flags & BF_WRITE_ERROR)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2337 /* timeout, asynchronous connect error or first write error */
2338 //fprintf(stderr,"2: c=%d, s=%d\n", c, s);
2339
2340 fd_delete(t->srv_fd);
2341 if (t->srv)
2342 t->srv->cur_sess--;
2343
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2344 if (!(req->flags & BF_WRITE_STATUS))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2345 conn_err = SN_ERR_SRVTO; // it was a connect timeout.
2346 else
2347 conn_err = SN_ERR_SRVCL; // it was an asynchronous connect error.
2348
2349 /* ensure that we have enough retries left */
2350 if (srv_count_retry_down(t, conn_err))
2351 return 1;
2352
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2353 if (t->srv && t->conn_retries == 0 && t->be->options & PR_O_REDISP) {
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2354 /* We're on our last chance, and the REDISP option was specified.
2355 * We will ignore cookie and force to balance or use the dispatcher.
2356 */
2357 /* let's try to offer this slot to anybody */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2358 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2359 task_wakeup(&rq, t->srv->queue_mgt);
2360
2361 if (t->srv)
2362 t->srv->failed_conns++;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2363 t->be->failed_conns++;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2364
2365 t->flags &= ~(SN_DIRECT | SN_ASSIGNED | SN_ADDR_SET);
2366 t->srv = NULL; /* it's left to the dispatcher to choose a server */
Willy Tarreaua5e65752007-03-18 20:53:22 +0100[diff] [blame]2367 http_flush_cookie_flags(txn);
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2368
2369 /* first, get a connection */
2370 if (srv_redispatch_connect(t))
2371 return t->srv_state != SV_STIDLE;
2372 }
2373
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2374 do {
2375 /* Now we will try to either reconnect to the same server or
2376 * connect to another server. If the connection gets queued
2377 * because all servers are saturated, then we will go back to
2378 * the SV_STIDLE state.
2379 */
2380 if (srv_retryable_connect(t)) {
2381 t->logs.t_queue = tv_diff(&t->logs.tv_accept, &now);
2382 return t->srv_state != SV_STCONN;
2383 }
2384
2385 /* we need to redispatch the connection to another server */
2386 if (srv_redispatch_connect(t))
2387 return t->srv_state != SV_STCONN;
2388 } while (1);
2389 }
2390 else { /* no error or write 0 */
2391 t->logs.t_connect = tv_diff(&t->logs.tv_accept, &now);
2392
2393 //fprintf(stderr,"3: c=%d, s=%d\n", c, s);
2394 if (req->l == 0) /* nothing to write */ {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2395 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2396 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2397 } else /* need the right to write */ {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2398 EV_FD_SET(t->srv_fd, DIR_WR);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2399 if (t->be->srvtimeout) {
2400 tv_delayfrom(&req->wex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2401 /* FIXME: to prevent the server from expiring read timeouts during writes,
2402 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2403 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2404 }
2405 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2406 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2407 }
2408
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2409 if (t->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2410 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2411 if (t->be->srvtimeout)
2412 tv_delayfrom(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2413 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2414 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2415
2416 t->srv_state = SV_STDATA;
2417 if (t->srv)
2418 t->srv->cum_sess++;
2419 rep->rlim = rep->data + BUFSIZE; /* no rewrite needed */
2420
2421 /* if the user wants to log as soon as possible, without counting
2422 bytes from the server, then this is the right moment. */
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2423 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2424 t->logs.t_close = t->logs.t_connect; /* to get a valid end date */
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]2425 tcp_sess_log(t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2426 }
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]2427#ifdef CONFIG_HAP_TCPSPLICE
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2428 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]2429 /* TCP splicing supported by both FE and BE */
2430 tcp_splice_splicefd(t->cli_fd, t->srv_fd, 0);
2431 }
2432#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2433 }
2434 else {
2435 t->srv_state = SV_STHEADERS;
2436 if (t->srv)
2437 t->srv->cum_sess++;
2438 rep->rlim = rep->data + BUFSIZE - MAXREWRITE; /* rewrite needed */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2439 t->txn.rsp.msg_state = HTTP_MSG_RPBEFORE;
2440 /* reset hdr_idx which was already initialized by the request.
2441 * right now, the http parser does it.
2442 * hdr_idx_init(&t->txn.hdr_idx);
2443 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2444 }
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2445 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2446 return 1;
2447 }
2448 }
2449 else if (s == SV_STHEADERS) { /* receiving server headers */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2450 /*
2451 * Now parse the partial (or complete) lines.
2452 * We will check the response syntax, and also join multi-line
2453 * headers. An index of all the lines will be elaborated while
2454 * parsing.
2455 *
2456 * For the parsing, we use a 28 states FSM.
2457 *
2458 * Here is the information we currently have :
2459 * rep->data + req->som = beginning of response
2460 * rep->data + req->eoh = end of processed headers / start of current one
2461 * rep->data + req->eol = end of current header or line (LF or CRLF)
2462 * rep->lr = first non-visited byte
2463 * rep->r = end of data
2464 */
2465
2466 int cur_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2467 struct http_msg *msg = &txn->rsp;
2468 struct proxy *cur_proxy;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2469
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2470 if (likely(rep->lr < rep->r))
2471 http_msg_analyzer(rep, msg, &txn->hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2472
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2473 /* 1: we might have to print this header in debug mode */
2474 if (unlikely((global.mode & MODE_DEBUG) &&
2475 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2476 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
2477 char *eol, *sol;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2478
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2479 sol = rep->data + msg->som;
2480 eol = sol + msg->sl.rq.l;
2481 debug_hdr("srvrep", t, sol, eol);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2482
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2483 sol += hdr_idx_first_pos(&txn->hdr_idx);
2484 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2485
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2486 while (cur_idx) {
2487 eol = sol + txn->hdr_idx.v[cur_idx].len;
2488 debug_hdr("srvhdr", t, sol, eol);
2489 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2490 cur_idx = txn->hdr_idx.v[cur_idx].next;
2491 }
2492 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2493
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2494
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]2495 if ((rep->l < rep->rlim - rep->data) && EV_FD_COND_S(t->srv_fd, DIR_RD)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2496 /* fd in DIR_RD was disabled, perhaps because of a previous buffer
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2497 * full. We cannot loop here since stream_sock_read will disable it only if
2498 * rep->l == rlim-data
2499 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2500 if (t->be->srvtimeout)
2501 tv_delayfrom(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2502 else
2503 tv_eternity(&rep->rex);
2504 }
2505
2506
2507 /*
2508 * Now we quickly check if we have found a full valid response.
2509 * If not so, we check the FD and buffer states before leaving.
2510 * A full response is indicated by the fact that we have seen
2511 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
2512 * responses are checked first.
2513 *
2514 * Depending on whether the client is still there or not, we
2515 * may send an error response back or not. Note that normally
2516 * we should only check for HTTP status there, and check I/O
2517 * errors somewhere else.
2518 */
2519
2520 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2521
2522 /* Invalid response, or read error or write error */
2523 if (unlikely((msg->msg_state == HTTP_MSG_ERROR) ||
2524 (req->flags & BF_WRITE_ERROR) ||
2525 (rep->flags & BF_READ_ERROR))) {
2526 tv_eternity(&rep->rex);
2527 tv_eternity(&req->wex);
2528 fd_delete(t->srv_fd);
2529 if (t->srv) {
2530 t->srv->cur_sess--;
2531 t->srv->failed_resp++;
2532 }
2533 t->be->failed_resp++;
2534 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2535 txn->status = 502;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2536 client_return(t, error_message(t, HTTP_ERR_502));
2537 if (!(t->flags & SN_ERR_MASK))
2538 t->flags |= SN_ERR_SRVCL;
2539 if (!(t->flags & SN_FINST_MASK))
2540 t->flags |= SN_FINST_H;
2541 /* We used to have a free connection slot. Since we'll never use it,
2542 * we have to inform the server that it may be used by another session.
2543 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2544 if (t->srv && may_dequeue_tasks(t->srv, t->be))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2545 task_wakeup(&rq, t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2546
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2547 return 1;
2548 }
2549
2550 /* end of client write or end of server read.
2551 * since we are in header mode, if there's no space left for headers, we
2552 * won't be able to free more later, so the session will never terminate.
2553 */
2554 else if (unlikely(rep->flags & BF_READ_NULL ||
2555 c == CL_STSHUTW || c == CL_STCLOSE ||
2556 rep->l >= rep->rlim - rep->data)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2557 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2558 tv_eternity(&rep->rex);
2559 shutdown(t->srv_fd, SHUT_RD);
2560 t->srv_state = SV_STSHUTR;
2561 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2562 return 1;
2563 }
2564
2565 /* read timeout : return a 504 to the client.
2566 */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2567 else if (unlikely(EV_FD_ISSET(t->srv_fd, DIR_RD) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2568 tv_cmp2_ms(&rep->rex, &now) <= 0)) {
2569 tv_eternity(&rep->rex);
2570 tv_eternity(&req->wex);
2571 fd_delete(t->srv_fd);
2572 if (t->srv) {
2573 t->srv->cur_sess--;
2574 t->srv->failed_resp++;
2575 }
2576 t->be->failed_resp++;
2577 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2578 txn->status = 504;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2579 client_return(t, error_message(t, HTTP_ERR_504));
2580 if (!(t->flags & SN_ERR_MASK))
2581 t->flags |= SN_ERR_SRVTO;
2582 if (!(t->flags & SN_FINST_MASK))
2583 t->flags |= SN_FINST_H;
2584 /* We used to have a free connection slot. Since we'll never use it,
2585 * we have to inform the server that it may be used by another session.
2586 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2587 if (t->srv && may_dequeue_tasks(t->srv, t->be))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2588 task_wakeup(&rq, t->srv->queue_mgt);
2589 return 1;
2590 }
2591
2592 /* last client read and buffer empty */
2593 /* FIXME!!! here, we don't want to switch to SHUTW if the
2594 * client shuts read too early, because we may still have
2595 * some work to do on the headers.
2596 * The side-effect is that if the client completely closes its
2597 * connection during SV_STHEADER, the connection to the server
2598 * is kept until a response comes back or the timeout is reached.
2599 */
2600 else if (unlikely((/*c == CL_STSHUTR ||*/ c == CL_STCLOSE) &&
2601 (req->l == 0))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2602 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2603 tv_eternity(&req->wex);
2604
2605 /* We must ensure that the read part is still
2606 * alive when switching to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2607 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2608 if (t->be->srvtimeout)
2609 tv_delayfrom(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2610
2611 shutdown(t->srv_fd, SHUT_WR);
2612 t->srv_state = SV_STSHUTW;
2613 return 1;
2614 }
2615
2616 /* write timeout */
2617 /* FIXME!!! here, we don't want to switch to SHUTW if the
2618 * client shuts read too early, because we may still have
2619 * some work to do on the headers.
2620 */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2621 else if (unlikely(EV_FD_ISSET(t->srv_fd, DIR_WR) &&
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]2622 tv_cmp2_ms(&req->wex, &now) <= 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2623 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2624 tv_eternity(&req->wex);
2625 shutdown(t->srv_fd, SHUT_WR);
2626 /* We must ensure that the read part is still alive
2627 * when switching to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2628 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2629 if (t->be->srvtimeout)
2630 tv_delayfrom(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2631
2632 t->srv_state = SV_STSHUTW;
2633 if (!(t->flags & SN_ERR_MASK))
2634 t->flags |= SN_ERR_SRVTO;
2635 if (!(t->flags & SN_FINST_MASK))
2636 t->flags |= SN_FINST_H;
2637 return 1;
2638 }
2639
2640 /*
2641 * And now the non-error cases.
2642 */
2643
2644 /* Data remaining in the request buffer.
2645 * This happens during the first pass here, and during
2646 * long posts.
2647 */
2648 else if (likely(req->l)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]2649 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
2650 /* restart writing */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2651 if (t->be->srvtimeout) {
2652 tv_delayfrom(&req->wex, &now, t->be->srvtimeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2653 /* FIXME: to prevent the server from expiring read timeouts during writes,
2654 * we refresh it. */
2655 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2656 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2657 else
2658 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2659 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2660 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2661
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2662 /* nothing left in the request buffer */
2663 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]2664 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
2665 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2666 tv_eternity(&req->wex);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2667 }
2668 }
2669
2670 return t->srv_state != SV_STHEADERS;
2671 }
2672
2673
2674 /*****************************************************************
2675 * More interesting part now : we know that we have a complete *
2676 * response which at least looks like HTTP. We have an indicator *
2677 * of each header's length, so we can parse them quickly. *
2678 ****************************************************************/
2679
2680 /*
2681 * 1: get the status code and check for cacheability.
2682 */
2683
2684 t->logs.logwait &= ~LW_RESP;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2685 txn->status = strl2ui(rep->data + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2686
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2687 switch (txn->status) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2688 case 200:
2689 case 203:
2690 case 206:
2691 case 300:
2692 case 301:
2693 case 410:
2694 /* RFC2616 @13.4:
2695 * "A response received with a status code of
2696 * 200, 203, 206, 300, 301 or 410 MAY be stored
2697 * by a cache (...) unless a cache-control
2698 * directive prohibits caching."
2699 *
2700 * RFC2616 @9.5: POST method :
2701 * "Responses to this method are not cacheable,
2702 * unless the response includes appropriate
2703 * Cache-Control or Expires header fields."
2704 */
2705 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2706 unlikely(t->be->options & PR_O_CHK_CACHE))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2707 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2708 break;
2709 default:
2710 break;
2711 }
2712
2713 /*
2714 * 2: we may need to capture headers
2715 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2716 if (unlikely((t->logs.logwait & LW_RSPHDR) && t->fe->rsp_cap))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2717 capture_headers(rep->data + msg->som, &txn->hdr_idx,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2718 txn->rsp.cap, t->fe->rsp_cap);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2719
2720 /*
2721 * 3: we will have to evaluate the filters.
2722 * As opposed to version 1.2, now they will be evaluated in the
2723 * filters order and not in the header order. This means that
2724 * each filter has to be validated among all headers.
2725 *
2726 * Filters are tried with ->be first, then with ->fe if it is
2727 * different from ->be.
2728 */
2729
2730 t->flags &= ~SN_CONN_CLOSED; /* prepare for inspection */
2731
2732 cur_proxy = t->be;
2733 while (1) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2734 struct proxy *rule_set = cur_proxy;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2735
2736 /* try headers filters */
2737 if (rule_set->rsp_exp != NULL) {
2738 if (apply_filters_to_response(t, rep, rule_set->rsp_exp) < 0) {
2739 return_bad_resp:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2740 if (t->srv) {
2741 t->srv->cur_sess--;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2742 t->srv->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2743 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2744 cur_proxy->failed_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2745 return_srv_prx_502:
2746 tv_eternity(&rep->rex);
2747 tv_eternity(&req->wex);
2748 fd_delete(t->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2749 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2750 txn->status = 502;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2751 client_return(t, error_message(t, HTTP_ERR_502));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2752 if (!(t->flags & SN_ERR_MASK))
2753 t->flags |= SN_ERR_PRXCOND;
2754 if (!(t->flags & SN_FINST_MASK))
2755 t->flags |= SN_FINST_H;
2756 /* We used to have a free connection slot. Since we'll never use it,
2757 * we have to inform the server that it may be used by another session.
2758 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2759 if (t->srv && may_dequeue_tasks(t->srv, cur_proxy))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2760 task_wakeup(&rq, t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2761 return 1;
2762 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2763 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2764
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2765 /* has the response been denied ? */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2766 if (txn->flags & TX_SVDENY) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2767 if (t->srv) {
2768 t->srv->cur_sess--;
2769 t->srv->failed_secu++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2770 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2771 cur_proxy->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2772 goto return_srv_prx_502;
2773 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2774
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2775 /* We might have to check for "Connection:" */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2776 if (((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2777 !(t->flags & SN_CONN_CLOSED)) {
2778 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2779 int cur_idx, old_idx, delta, val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2780 struct hdr_idx_elem *cur_hdr;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2781
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2782 cur_next = rep->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
2783 old_idx = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2784
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2785 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
2786 cur_hdr = &txn->hdr_idx.v[cur_idx];
2787 cur_ptr = cur_next;
2788 cur_end = cur_ptr + cur_hdr->len;
2789 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2790
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2791 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
2792 if (val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2793 /* 3 possibilities :
2794 * - we have already set Connection: close,
2795 * so we remove this line.
2796 * - we have not yet set Connection: close,
2797 * but this line indicates close. We leave
2798 * it untouched and set the flag.
2799 * - we have not yet set Connection: close,
2800 * and this line indicates non-close. We
2801 * replace it.
2802 */
2803 if (t->flags & SN_CONN_CLOSED) {
2804 delta = buffer_replace2(rep, cur_ptr, cur_next, NULL, 0);
2805 txn->rsp.eoh += delta;
2806 cur_next += delta;
2807 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2808 txn->hdr_idx.used--;
2809 cur_hdr->len = 0;
2810 } else {
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2811 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
2812 delta = buffer_replace2(rep, cur_ptr + val, cur_end,
2813 "close", 5);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2814 cur_next += delta;
2815 cur_hdr->len += delta;
2816 txn->rsp.eoh += delta;
2817 }
2818 t->flags |= SN_CONN_CLOSED;
2819 }
2820 }
2821 old_idx = cur_idx;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2822 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2823 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2824
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2825 /* add response headers from the rule sets in the same order */
2826 for (cur_idx = 0; cur_idx < rule_set->nb_rspadd; cur_idx++) {
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2827 if (unlikely(http_header_add_tail(rep, &txn->rsp, &txn->hdr_idx,
2828 rule_set->rsp_add[cur_idx])) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2829 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2830 }
2831
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2832 /* check whether we're already working on the frontend */
2833 if (cur_proxy == t->fe)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2834 break;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2835 cur_proxy = t->fe;
2836 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2837
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2838 /*
2839 * 4: check for server cookie.
2840 */
2841 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2842
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2843 /*
2844 * 5: add server cookie in the response if needed
2845 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2846 if ((t->srv) && !(t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_INS) &&
2847 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2848 int len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2849
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2850 /* the server is known, it's not the one the client requested, we have to
2851 * insert a set-cookie here, except if we want to insert only on POST
2852 * requests and this one isn't. Note that servers which don't have cookies
2853 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2854 */
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2855 len = sprintf(trash, "Set-Cookie: %s=%s; path=/",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2856 t->be->cookie_name,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2857 t->srv->cookie ? t->srv->cookie : "; Expires=Thu, 01-Jan-1970 00:00:01 GMT");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2858
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2859 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
2860 trash, len)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2861 goto return_bad_resp;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2862 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2863
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2864 /* Here, we will tell an eventual cache on the client side that we don't
2865 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
2866 * Some caches understand the correct form: 'no-cache="set-cookie"', but
2867 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
2868 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2869 if (t->be->options & PR_O_COOK_NOC) {
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2870 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
2871 "Cache-control: private", 22)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2872 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2873 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2874 }
2875
2876
2877 /*
2878 * 6: check for cache-control or pragma headers.
2879 */
2880 check_response_for_cacheability(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2881
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2882
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2883 /*
2884 * 7: check if result will be cacheable with a cookie.
2885 * We'll block the response if security checks have caught
2886 * nasty things such as a cacheable cookie.
2887 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2888 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) ==
2889 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2890 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2891
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2892 /* we're in presence of a cacheable response containing
2893 * a set-cookie header. We'll block it as requested by
2894 * the 'checkcache' option, and send an alert.
2895 */
2896 if (t->srv) {
2897 t->srv->cur_sess--;
2898 t->srv->failed_secu++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2899 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2900 t->be->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2901
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2902 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2903 t->be->id, t->srv?t->srv->id:"<dispatch>");
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2904 send_log(t->be, LOG_ALERT,
2905 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2906 t->be->id, t->srv?t->srv->id:"<dispatch>");
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2907 goto return_srv_prx_502;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2908 }
2909
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2910 /*
2911 * 8: add "Connection: close" if needed and not yet set.
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2912 * Note that we do not need to add it in case of HTTP/1.0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2913 */
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2914 if (!(t->flags & SN_CONN_CLOSED) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2915 ((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE)) {
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2916 if ((unlikely(msg->sl.st.v_l != 8) ||
2917 unlikely(req->data[msg->som + 7] != '0')) &&
2918 unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2919 "Connection: close", 17)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2920 goto return_bad_resp;
2921 t->flags |= SN_CONN_CLOSED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2922 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2923
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2924
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2925 /*************************************************************
2926 * OK, that's finished for the headers. We have done what we *
2927 * could. Let's switch to the DATA state. *
2928 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2929
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2930 t->srv_state = SV_STDATA;
2931 rep->rlim = rep->data + BUFSIZE; /* no more rewrite needed */
2932 t->logs.t_data = tv_diff(&t->logs.tv_accept, &now);
2933
2934 /* client connection already closed or option 'forceclose' required :
2935 * we close the server's outgoing connection right now.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2936 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2937 if ((req->l == 0) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2938 (c == CL_STSHUTR || c == CL_STCLOSE || t->be->options & PR_O_FORCE_CLO)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2939 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2940 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2941
2942 /* We must ensure that the read part is still alive when switching
2943 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2944 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2945 if (t->be->srvtimeout)
2946 tv_delayfrom(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2947
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2948 shutdown(t->srv_fd, SHUT_WR);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2949 t->srv_state = SV_STSHUTW;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2950 }
2951
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2952#ifdef CONFIG_HAP_TCPSPLICE
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2953 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2954 /* TCP splicing supported by both FE and BE */
2955 tcp_splice_splicefd(t->cli_fd, t->srv_fd, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2956 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2957#endif
2958 /* if the user wants to log as soon as possible, without counting
2959 bytes from the server, then this is the right moment. */
2960 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
2961 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
Willy Tarreaub4987172007-03-18 16:28:03 +0100[diff] [blame]2962 t->logs.bytes_in = txn->rsp.eoh;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]2963 if (t->fe->to_log & LW_REQ)
2964 http_sess_log(t);
2965 else
2966 tcp_sess_log(t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2967 }
2968
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2969 /* Note: we must not try to cheat by jumping directly to DATA,
2970 * otherwise we would not let the client side wake up.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2971 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2972
2973 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2974 }
2975 else if (s == SV_STDATA) {
2976 /* read or write error */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2977 if (req->flags & BF_WRITE_ERROR || rep->flags & BF_READ_ERROR) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2978 tv_eternity(&rep->rex);
2979 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2980 fd_delete(t->srv_fd);
2981 if (t->srv) {
2982 t->srv->cur_sess--;
2983 t->srv->failed_resp++;
2984 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2985 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2986 t->srv_state = SV_STCLOSE;
2987 if (!(t->flags & SN_ERR_MASK))
2988 t->flags |= SN_ERR_SRVCL;
2989 if (!(t->flags & SN_FINST_MASK))
2990 t->flags |= SN_FINST_D;
2991 /* We used to have a free connection slot. Since we'll never use it,
2992 * we have to inform the server that it may be used by another session.
2993 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2994 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2995 task_wakeup(&rq, t->srv->queue_mgt);
2996
2997 return 1;
2998 }
2999 /* last read, or end of client write */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3000 else if (rep->flags & BF_READ_NULL || c == CL_STSHUTW || c == CL_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3001 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3002 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3003 shutdown(t->srv_fd, SHUT_RD);
3004 t->srv_state = SV_STSHUTR;
3005 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
3006 return 1;
3007 }
3008 /* end of client read and no more data to send */
3009 else if ((c == CL_STSHUTR || c == CL_STCLOSE) && (req->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3010 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3011 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3012 shutdown(t->srv_fd, SHUT_WR);
3013 /* We must ensure that the read part is still alive when switching
3014 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3015 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3016 if (t->be->srvtimeout)
3017 tv_delayfrom(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3018
3019 t->srv_state = SV_STSHUTW;
3020 return 1;
3021 }
3022 /* read timeout */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3023 else if (tv_cmp2_ms(&rep->rex, &now) <= 0) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3024 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3025 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3026 shutdown(t->srv_fd, SHUT_RD);
3027 t->srv_state = SV_STSHUTR;
3028 if (!(t->flags & SN_ERR_MASK))
3029 t->flags |= SN_ERR_SRVTO;
3030 if (!(t->flags & SN_FINST_MASK))
3031 t->flags |= SN_FINST_D;
3032 return 1;
3033 }
3034 /* write timeout */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3035 else if (tv_cmp2_ms(&req->wex, &now) <= 0) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3036 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3037 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3038 shutdown(t->srv_fd, SHUT_WR);
3039 /* We must ensure that the read part is still alive when switching
3040 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3041 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3042 if (t->be->srvtimeout)
3043 tv_delayfrom(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3044 t->srv_state = SV_STSHUTW;
3045 if (!(t->flags & SN_ERR_MASK))
3046 t->flags |= SN_ERR_SRVTO;
3047 if (!(t->flags & SN_FINST_MASK))
3048 t->flags |= SN_FINST_D;
3049 return 1;
3050 }
3051
3052 /* recompute request time-outs */
3053 if (req->l == 0) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]3054 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
3055 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3056 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3057 }
3058 }
3059 else { /* buffer not empty, there are still data to be transferred */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]3060 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
3061 /* restart writing */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3062 if (t->be->srvtimeout) {
3063 tv_delayfrom(&req->wex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3064 /* FIXME: to prevent the server from expiring read timeouts during writes,
3065 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3066 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3067 }
3068 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3069 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3070 }
3071 }
3072
3073 /* recompute response time-outs */
3074 if (rep->l == BUFSIZE) { /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]3075 if (EV_FD_COND_C(t->srv_fd, DIR_RD)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3076 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3077 }
3078 }
3079 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]3080 if (EV_FD_COND_S(t->srv_fd, DIR_RD)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3081 if (t->be->srvtimeout)
3082 tv_delayfrom(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3083 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3084 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3085 }
3086 }
3087
3088 return 0; /* other cases change nothing */
3089 }
3090 else if (s == SV_STSHUTR) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3091 if (req->flags & BF_WRITE_ERROR) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3092 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3093 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3094 fd_delete(t->srv_fd);
3095 if (t->srv) {
3096 t->srv->cur_sess--;
3097 t->srv->failed_resp++;
3098 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3099 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3100 //close(t->srv_fd);
3101 t->srv_state = SV_STCLOSE;
3102 if (!(t->flags & SN_ERR_MASK))
3103 t->flags |= SN_ERR_SRVCL;
3104 if (!(t->flags & SN_FINST_MASK))
3105 t->flags |= SN_FINST_D;
3106 /* We used to have a free connection slot. Since we'll never use it,
3107 * we have to inform the server that it may be used by another session.
3108 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3109 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3110 task_wakeup(&rq, t->srv->queue_mgt);
3111
3112 return 1;
3113 }
3114 else if ((c == CL_STSHUTR || c == CL_STCLOSE) && (req->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3115 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3116 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3117 fd_delete(t->srv_fd);
3118 if (t->srv)
3119 t->srv->cur_sess--;
3120 //close(t->srv_fd);
3121 t->srv_state = SV_STCLOSE;
3122 /* We used to have a free connection slot. Since we'll never use it,
3123 * we have to inform the server that it may be used by another session.
3124 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3125 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3126 task_wakeup(&rq, t->srv->queue_mgt);
3127
3128 return 1;
3129 }
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3130 else if (tv_cmp2_ms(&req->wex, &now) <= 0) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3131 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3132 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3133 fd_delete(t->srv_fd);
3134 if (t->srv)
3135 t->srv->cur_sess--;
3136 //close(t->srv_fd);
3137 t->srv_state = SV_STCLOSE;
3138 if (!(t->flags & SN_ERR_MASK))
3139 t->flags |= SN_ERR_SRVTO;
3140 if (!(t->flags & SN_FINST_MASK))
3141 t->flags |= SN_FINST_D;
3142 /* We used to have a free connection slot. Since we'll never use it,
3143 * we have to inform the server that it may be used by another session.
3144 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3145 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3146 task_wakeup(&rq, t->srv->queue_mgt);
3147
3148 return 1;
3149 }
3150 else if (req->l == 0) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]3151 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
3152 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3153 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3154 }
3155 }
3156 else { /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]3157 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
3158 /* restart writing */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3159 if (t->be->srvtimeout) {
3160 tv_delayfrom(&req->wex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3161 /* FIXME: to prevent the server from expiring read timeouts during writes,
3162 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3163 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3164 }
3165 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3166 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3167 }
3168 }
3169 return 0;
3170 }
3171 else if (s == SV_STSHUTW) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3172 if (rep->flags & BF_READ_ERROR) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3173 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3174 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3175 fd_delete(t->srv_fd);
3176 if (t->srv) {
3177 t->srv->cur_sess--;
3178 t->srv->failed_resp++;
3179 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3180 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3181 //close(t->srv_fd);
3182 t->srv_state = SV_STCLOSE;
3183 if (!(t->flags & SN_ERR_MASK))
3184 t->flags |= SN_ERR_SRVCL;
3185 if (!(t->flags & SN_FINST_MASK))
3186 t->flags |= SN_FINST_D;
3187 /* We used to have a free connection slot. Since we'll never use it,
3188 * we have to inform the server that it may be used by another session.
3189 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3190 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3191 task_wakeup(&rq, t->srv->queue_mgt);
3192
3193 return 1;
3194 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3195 else if (rep->flags & BF_READ_NULL || c == CL_STSHUTW || c == CL_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3196 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3197 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3198 fd_delete(t->srv_fd);
3199 if (t->srv)
3200 t->srv->cur_sess--;
3201 //close(t->srv_fd);
3202 t->srv_state = SV_STCLOSE;
3203 /* We used to have a free connection slot. Since we'll never use it,
3204 * we have to inform the server that it may be used by another session.
3205 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3206 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3207 task_wakeup(&rq, t->srv->queue_mgt);
3208
3209 return 1;
3210 }
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3211 else if (tv_cmp2_ms(&rep->rex, &now) <= 0) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3212 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3213 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3214 fd_delete(t->srv_fd);
3215 if (t->srv)
3216 t->srv->cur_sess--;
3217 //close(t->srv_fd);
3218 t->srv_state = SV_STCLOSE;
3219 if (!(t->flags & SN_ERR_MASK))
3220 t->flags |= SN_ERR_SRVTO;
3221 if (!(t->flags & SN_FINST_MASK))
3222 t->flags |= SN_FINST_D;
3223 /* We used to have a free connection slot. Since we'll never use it,
3224 * we have to inform the server that it may be used by another session.
3225 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3226 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3227 task_wakeup(&rq, t->srv->queue_mgt);
3228
3229 return 1;
3230 }
3231 else if (rep->l == BUFSIZE) { /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]3232 if (EV_FD_COND_C(t->srv_fd, DIR_RD)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3233 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3234 }
3235 }
3236 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame^]3237 if (EV_FD_COND_S(t->srv_fd, DIR_RD)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3238 if (t->be->srvtimeout)
3239 tv_delayfrom(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3240 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3241 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3242 }
3243 }
3244 return 0;
3245 }
3246 else { /* SV_STCLOSE : nothing to do */
3247 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
3248 int len;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3249 len = sprintf(trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3250 t->uniq_id, t->be->id, (unsigned short)t->cli_fd, (unsigned short)t->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3251 write(1, trash, len);
3252 }
3253 return 0;
3254 }
3255 return 0;
3256}
3257
3258
3259/*
3260 * Produces data for the session <s> depending on its source. Expects to be
3261 * called with s->cli_state == CL_STSHUTR. Right now, only statistics can be
3262 * produced. It stops by itself by unsetting the SN_SELF_GEN flag from the
3263 * session, which it uses to keep on being called when there is free space in
3264 * the buffer, of simply by letting an empty buffer upon return. It returns 1
3265 * if it changes the session state from CL_STSHUTR, otherwise 0.
3266 */
3267int produce_content(struct session *s)
3268{
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3269 if (s->data_source == DATA_SRC_NONE) {
3270 s->flags &= ~SN_SELF_GEN;
3271 return 1;
3272 }
3273 else if (s->data_source == DATA_SRC_STATS) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3274 /* dump server statistics */
3275 return produce_content_stats(s);
3276 }
3277 else {
3278 /* unknown data source */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3279 s->txn.status = 500;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3280 client_retnclose(s, error_message(s, HTTP_ERR_500));
3281 if (!(s->flags & SN_ERR_MASK))
3282 s->flags |= SN_ERR_PRXCOND;
3283 if (!(s->flags & SN_FINST_MASK))
3284 s->flags |= SN_FINST_R;
3285 s->flags &= ~SN_SELF_GEN;
3286 return 1;
3287 }
3288}
3289
3290
3291/*
3292 * Produces statistics data for the session <s>. Expects to be called with
3293 * s->cli_state == CL_STSHUTR. It stops by itself by unsetting the SN_SELF_GEN
3294 * flag from the session, which it uses to keep on being called when there is
3295 * free space in the buffer, of simply by letting an empty buffer upon return.
3296 * It returns 1 if it changes the session state from CL_STSHUTR, otherwise 0.
3297 */
3298int produce_content_stats(struct session *s)
3299{
3300 struct buffer *rep = s->rep;
3301 struct proxy *px;
3302 struct chunk msg;
3303 unsigned int up;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3304
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3305 msg.len = 0;
3306 msg.str = trash;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3307
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3308 switch (s->data_state) {
3309 case DATA_ST_INIT:
3310 /* the function had not been called yet */
3311 s->flags |= SN_SELF_GEN; // more data will follow
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3312
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3313 chunk_printf(&msg, sizeof(trash),
3314 "HTTP/1.0 200 OK\r\n"
3315 "Cache-Control: no-cache\r\n"
3316 "Connection: close\r\n"
3317 "Content-Type: text/html\r\n"
3318 "\r\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3319
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3320 s->txn.status = 200;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3321 client_retnclose(s, &msg); // send the start of the response.
3322 msg.len = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3323
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3324 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3325 s->flags |= SN_ERR_PRXCOND; // to mark that it comes from the proxy
3326 if (!(s->flags & SN_FINST_MASK))
3327 s->flags |= SN_FINST_R;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3328
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]3329 if (s->txn.meth == HTTP_METH_HEAD) {
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]3330 /* that's all we return in case of HEAD request */
3331 s->data_state = DATA_ST_FIN;
3332 s->flags &= ~SN_SELF_GEN;
3333 return 1;
3334 }
3335
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3336 s->data_state = DATA_ST_HEAD; /* let's start producing data */
3337 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3338
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3339 case DATA_ST_HEAD:
3340 /* WARNING! This must fit in the first buffer !!! */
3341 chunk_printf(&msg, sizeof(trash),
3342 "<html><head><title>Statistics Report for " PRODUCT_NAME "</title>\n"
3343 "<meta http-equiv=\"content-type\" content=\"text/html; charset=iso-8859-1\">\n"
3344 "<style type=\"text/css\"><!--\n"
3345 "body {"
3346 " font-family: helvetica, arial;"
3347 " font-size: 12px;"
3348 " font-weight: normal;"
3349 " color: black;"
3350 " background: white;"
3351 "}\n"
3352 "th,td {"
3353 " font-size: 0.8em;"
3354 " align: center;"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3355 "}\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3356 "h1 {"
3357 " font-size: xx-large;"
3358 " margin-bottom: 0.5em;"
3359 "}\n"
3360 "h2 {"
3361 " font-family: helvetica, arial;"
3362 " font-size: x-large;"
3363 " font-weight: bold;"
3364 " font-style: italic;"
3365 " color: #6020a0;"
3366 " margin-top: 0em;"
3367 " margin-bottom: 0em;"
3368 "}\n"
3369 "h3 {"
3370 " font-family: helvetica, arial;"
3371 " font-size: 16px;"
3372 " font-weight: bold;"
3373 " color: #b00040;"
3374 " background: #e8e8d0;"
3375 " margin-top: 0em;"
3376 " margin-bottom: 0em;"
3377 "}\n"
3378 "li {"
3379 " margin-top: 0.25em;"
3380 " margin-right: 2em;"
3381 "}\n"
3382 ".hr {margin-top: 0.25em;"
3383 " border-color: black;"
3384 " border-bottom-style: solid;"
3385 "}\n"
3386 ".pxname {background: #b00040;color: #ffff40;font-weight: bold;}\n"
3387 ".titre {background: #20D0D0;color: #000000;font-weight: bold;}\n"
3388 ".total {background: #20D0D0;color: #ffff80;}\n"
3389 ".frontend {background: #e8e8d0;}\n"
3390 ".backend {background: #e8e8d0;}\n"
3391 ".active0 {background: #ff9090;}\n"
3392 ".active1 {background: #ffd020;}\n"
3393 ".active2 {background: #ffffa0;}\n"
3394 ".active3 {background: #c0ffc0;}\n"
3395 ".active4 {background: #e0e0e0;}\n"
3396 ".backup0 {background: #ff9090;}\n"
3397 ".backup1 {background: #ff80ff;}\n"
3398 ".backup2 {background: #c060ff;}\n"
3399 ".backup3 {background: #b0d0ff;}\n"
3400 ".backup4 {background: #e0e0e0;}\n"
3401 "table.tbl { border-collapse: collapse; border-style: none;}\n"
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3402 "table.tbl td { border-width: 1px 1px 1px 1px; border-style: solid solid solid solid; padding: 2px 3px; border-color: gray;}\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3403 "table.tbl th { border-width: 1px; border-style: solid solid solid solid; border-color: gray;}\n"
3404 "table.tbl th.empty { border-style: none; empty-cells: hide;}\n"
3405 "table.lgd { border-collapse: collapse; border-width: 1px; border-style: none none none solid; border-color: black;}\n"
3406 "table.lgd td { border-width: 1px; border-style: solid solid solid solid; border-color: gray; padding: 2px;}\n"
3407 "table.lgd td.noborder { border-style: none; padding: 2px; white-space: nowrap;}\n"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3408 "-->\n"
3409 "</style></head>\n");
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3410
3411 if (buffer_write_chunk(rep, &msg) != 0)
3412 return 0;
3413
3414 s->data_state = DATA_ST_INFO;
3415 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3416
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3417 case DATA_ST_INFO:
3418 up = (now.tv_sec - start_date.tv_sec);
3419
3420 /* WARNING! this has to fit the first packet too.
3421 * We are around 3.5 kB, add adding entries will
3422 * become tricky if we want to support 4kB buffers !
3423 */
3424 chunk_printf(&msg, sizeof(trash),
3425 "<body><h1><a href=\"" PRODUCT_URL "\" style=\"text-decoration: none;\">"
3426 PRODUCT_NAME "</a></h1>\n"
3427 "<h2>Statistics Report for pid %d</h2>\n"
3428 "<hr width=\"100%%\" class=\"hr\">\n"
3429 "<h3>&gt; General process information</h3>\n"
3430 "<table border=0 cols=3><tr><td align=\"left\" nowrap width=\"1%%\">\n"
3431 "<p><b>pid = </b> %d (nbproc = %d)<br>\n"
3432 "<b>uptime = </b> %dd %dh%02dm%02ds<br>\n"
3433 "<b>system limits :</b> memmax = %s%s ; ulimit-n = %d<br>\n"
3434 "<b>maxsock = </b> %d<br>\n"
3435 "<b>maxconn = </b> %d (current conns = %d)<br>\n"
3436 "</td><td align=\"center\" nowrap>\n"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3437 "<table class=\"lgd\"><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3438 "<td class=\"active3\">&nbsp;</td><td class=\"noborder\">active UP </td>"
3439 "<td class=\"backup3\">&nbsp;</td><td class=\"noborder\">backup UP </td>"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3440 "</tr><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3441 "<td class=\"active2\"></td><td class=\"noborder\">active UP, going down </td>"
3442 "<td class=\"backup2\"></td><td class=\"noborder\">backup UP, going down </td>"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3443 "</tr><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3444 "<td class=\"active1\"></td><td class=\"noborder\">active DOWN, going up </td>"
3445 "<td class=\"backup1\"></td><td class=\"noborder\">backup DOWN, going up </td>"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3446 "</tr><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3447 "<td class=\"active0\"></td><td class=\"noborder\">active or backup DOWN &nbsp;</td>"
3448 "<td class=\"active4\"></td><td class=\"noborder\">not checked </td>"
3449 "</tr></table>\n"
3450 "</td>"
3451 "<td align=\"left\" nowrap width=\"1%%\">"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3452 "<b>External ressources:</b><ul style=\"margin-top: 0.25em;\">\n"
3453 "<li><a href=\"" PRODUCT_URL "\">Primary site</a><br>\n"
3454 "<li><a href=\"" PRODUCT_URL_UPD "\">Updates (v" PRODUCT_BRANCH ")</a><br>\n"
3455 "<li><a href=\"" PRODUCT_URL_DOC "\">Online manual</a><br>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3456 "</ul>"
3457 "</td>"
3458 "</tr></table>\n"
3459 "",
3460 pid, pid, global.nbproc,
3461 up / 86400, (up % 86400) / 3600,
3462 (up % 3600) / 60, (up % 60),
3463 global.rlimit_memmax ? ultoa(global.rlimit_memmax) : "unlimited",
3464 global.rlimit_memmax ? " MB" : "",
3465 global.rlimit_nofile,
3466 global.maxsock,
3467 global.maxconn,
3468 actconn
3469 );
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3470
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3471 if (buffer_write_chunk(rep, &msg) != 0)
3472 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3473
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3474 memset(&s->data_ctx, 0, sizeof(s->data_ctx));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3475
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3476 s->data_ctx.stats.px = proxy;
3477 s->data_ctx.stats.px_st = DATA_ST_PX_INIT;
3478 s->data_state = DATA_ST_LIST;
3479 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3480
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3481 case DATA_ST_LIST:
3482 /* dump proxies */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3483 while (s->data_ctx.stats.px) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3484 px = s->data_ctx.stats.px;
3485 /* skip the disabled proxies and non-networked ones */
3486 if (px->state != PR_STSTOPPED && (px->cap & (PR_CAP_FE | PR_CAP_BE)))
3487 if (produce_content_stats_proxy(s, px) == 0)
3488 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3489
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3490 s->data_ctx.stats.px = px->next;
3491 s->data_ctx.stats.px_st = DATA_ST_PX_INIT;
3492 }
3493 /* here, we just have reached the last proxy */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3494
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3495 s->data_state = DATA_ST_END;
3496 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3497
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3498 case DATA_ST_END:
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]3499 chunk_printf(&msg, sizeof(trash), "</body></html>\n");
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3500 if (buffer_write_chunk(rep, &msg) != 0)
3501 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3502
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3503 s->data_state = DATA_ST_FIN;
3504 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3505
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3506 case DATA_ST_FIN:
3507 s->flags &= ~SN_SELF_GEN;
3508 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3509
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3510 default:
3511 /* unknown state ! */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3512 s->txn.status = 500;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3513 client_retnclose(s, error_message(s, HTTP_ERR_500));
3514 if (!(s->flags & SN_ERR_MASK))
3515 s->flags |= SN_ERR_PRXCOND;
3516 if (!(s->flags & SN_FINST_MASK))
3517 s->flags |= SN_FINST_R;
3518 s->flags &= ~SN_SELF_GEN;
3519 return 1;
3520 }
3521}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3522
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3523
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3524/*
3525 * Dumps statistics for a proxy.
3526 * Returns 0 if it had to stop dumping data because of lack of buffer space,
3527 * ot non-zero if everything completed.
3528 */
3529int produce_content_stats_proxy(struct session *s, struct proxy *px)
3530{
3531 struct buffer *rep = s->rep;
3532 struct server *sv;
3533 struct chunk msg;
3534
3535 msg.len = 0;
3536 msg.str = trash;
3537
3538 switch (s->data_ctx.stats.px_st) {
3539 case DATA_ST_PX_INIT:
3540 /* we are on a new proxy */
3541
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3542 if (s->be->uri_auth && s->be->uri_auth->scope) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3543 /* we have a limited scope, we have to check the proxy name */
3544 struct stat_scope *scope;
3545 int len;
3546
3547 len = strlen(px->id);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3548 scope = s->be->uri_auth->scope;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3549
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3550 while (scope) {
3551 /* match exact proxy name */
3552 if (scope->px_len == len && !memcmp(px->id, scope->px_id, len))
3553 break;
3554
3555 /* match '.' which means 'self' proxy */
3556 if (!strcmp(scope->px_id, ".") && px == s->fe)
3557 break;
3558 scope = scope->next;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3559 }
3560
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3561 /* proxy name not found : don't dump anything */
3562 if (scope == NULL)
3563 return 1;
3564 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3565
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3566 s->data_ctx.stats.px_st = DATA_ST_PX_TH;
3567 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3568
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3569 case DATA_ST_PX_TH:
3570 /* print a new table */
3571 chunk_printf(&msg, sizeof(trash),
3572 "<table cols=\"20\" class=\"tbl\" width=\"100%%\">\n"
3573 "<tr align=\"center\" class=\"titre\">"
3574 "<th colspan=2 class=\"pxname\">%s</th>"
3575 "<th colspan=18 class=\"empty\"></th>"
3576 "</tr>\n"
3577 "<tr align=\"center\" class=\"titre\">"
3578 "<th rowspan=2></th>"
3579 "<th colspan=2>Queue</th><th colspan=4>Sessions</th>"
3580 "<th colspan=2>Bytes</th><th colspan=2>Denied</th>"
3581 "<th colspan=3>Errors</th><th colspan=6>Server</th>"
3582 "</tr>\n"
3583 "<tr align=\"center\" class=\"titre\">"
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3584 "<th>Cur</th><th>Max</th><th>Cur</th><th>Max</th>"
3585 "<th>Limit</th><th>Cumul</th><th>In</th><th>Out</th>"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3586 "<th>Req</th><th>Resp</th><th>Req</th><th>Conn</th>"
3587 "<th>Resp</th><th>Status</th><th>Weight</th><th>Act</th>"
3588 "<th>Bck</th><th>Check</th><th>Down</th></tr>\n"
3589 "",
3590 px->id);
3591
3592 if (buffer_write_chunk(rep, &msg) != 0)
3593 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3594
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3595 s->data_ctx.stats.px_st = DATA_ST_PX_FE;
3596 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3597
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3598 case DATA_ST_PX_FE:
3599 /* print the frontend */
3600 if (px->cap & PR_CAP_FE) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3601 chunk_printf(&msg, sizeof(trash),
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3602 /* name, queue */
3603 "<tr align=center class=\"frontend\"><td>Frontend</td><td colspan=2></td>"
3604 /* sessions : current, max, limit, cumul. */
3605 "<td align=right>%d</td><td align=right>%d</td><td align=right>%d</td><td align=right>%d</td>"
3606 /* bytes : in, out */
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3607 "<td align=right>%lld</td><td align=right>%lld</td>"
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3608 /* denied: req, resp */
3609 "<td align=right>%d</td><td align=right>%d</td>"
3610 /* errors : request, connect, response */
3611 "<td align=right>%d</td><td align=right></td><td align=right></td>"
3612 /* server status : reflect backend status */
3613 "<td align=center>%s</td>"
3614 /* rest of server: nothing */
3615 "<td align=center colspan=5></td></tr>"
3616 "",
3617 px->feconn, px->feconn_max, px->maxconn, px->cum_feconn,
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3618 px->bytes_in, px->bytes_out,
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3619 px->denied_req, px->denied_resp,
3620 px->failed_req,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3621 px->state == PR_STRUN ? "OPEN" :
3622 px->state == PR_STIDLE ? "FULL" : "STOP");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3623
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3624 if (buffer_write_chunk(rep, &msg) != 0)
3625 return 0;
3626 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3627
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3628 s->data_ctx.stats.sv = px->srv; /* may be NULL */
3629 s->data_ctx.stats.px_st = DATA_ST_PX_SV;
3630 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3631
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3632 case DATA_ST_PX_SV:
3633 /* stats.sv has been initialized above */
3634 while (s->data_ctx.stats.sv != NULL) {
3635 static char *srv_hlt_st[5] = { "DOWN", "DN %d/%d &uarr;", "UP %d/%d &darr;", "UP", "<i>no check</i>" };
3636 int sv_state; /* 0=DOWN, 1=going up, 2=going down, 3=UP, 4=unchecked */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3637
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3638 sv = s->data_ctx.stats.sv;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3639
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3640 /* FIXME: produce some small strings for "UP/DOWN x/y &#xxxx;" */
3641 if (!(sv->state & SRV_CHECKED))
3642 sv_state = 4;
3643 else if (sv->state & SRV_RUNNING)
3644 if (sv->health == sv->rise + sv->fall - 1)
3645 sv_state = 3; /* UP */
3646 else
3647 sv_state = 2; /* going down */
3648 else
3649 if (sv->health)
3650 sv_state = 1; /* going up */
3651 else
3652 sv_state = 0; /* DOWN */
3653
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3654 chunk_printf(&msg, sizeof(trash),
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3655 /* name */
3656 "<tr align=\"center\" class=\"%s%d\"><td>%s</td>"
3657 /* queue : current, max */
3658 "<td align=right>%d</td><td align=right>%d</td>"
3659 /* sessions : current, max, limit, cumul */
3660 "<td align=right>%d</td><td align=right>%d</td><td align=right>%s</td><td align=right>%d</td>"
3661 /* bytes : in, out */
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3662 "<td align=right>%lld</td><td align=right>%lld</td>"
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3663 /* denied: req, resp */
3664 "<td align=right></td><td align=right>%d</td>"
3665 /* errors : request, connect, response */
3666 "<td align=right></td><td align=right>%d</td><td align=right>%d</td>\n"
3667 "",
Willy Tarreau368e96a2007-01-07 00:16:15 +0100[diff] [blame]3668 (sv->state & SRV_BACKUP) ? "backup" : "active",
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3669 sv_state, sv->id,
3670 sv->nbpend, sv->nbpend_max,
3671 sv->cur_sess, sv->cur_sess_max, sv->maxconn ? ultoa(sv->maxconn) : "-", sv->cum_sess,
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3672 sv->bytes_in, sv->bytes_out,
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3673 sv->failed_secu,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3674 sv->failed_conns, sv->failed_resp);
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3675
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3676 /* status */
3677 chunk_printf(&msg, sizeof(trash), "<td nowrap>");
3678 chunk_printf(&msg, sizeof(trash),
3679 srv_hlt_st[sv_state],
3680 (sv->state & SRV_RUNNING) ? (sv->health - sv->rise + 1) : (sv->health),
3681 (sv->state & SRV_RUNNING) ? (sv->fall) : (sv->rise));
3682
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3683 chunk_printf(&msg, sizeof(trash),
3684 /* weight */
3685 "</td><td>%d</td>"
3686 /* act, bck */
3687 "<td>%s</td><td>%s</td>"
3688 "",
Willy Tarreau417fae02007-03-25 21:16:40 +0200[diff] [blame]3689 sv->uweight,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3690 (sv->state & SRV_BACKUP) ? "-" : "Y",
3691 (sv->state & SRV_BACKUP) ? "Y" : "-");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3692
3693 /* check failures : unique, fatal */
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3694 if (sv->state & SRV_CHECKED)
3695 chunk_printf(&msg, sizeof(trash),
3696 "<td align=right>%d</td><td align=right>%d</td></tr>\n",
3697 sv->failed_checks, sv->down_trans);
3698 else
3699 chunk_printf(&msg, sizeof(trash),
3700 "<td colspan=2></td></tr>\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3701
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3702 if (buffer_write_chunk(rep, &msg) != 0)
3703 return 0;
3704
3705 s->data_ctx.stats.sv = sv->next;
3706 } /* while sv */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3707
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3708 s->data_ctx.stats.px_st = DATA_ST_PX_BE;
3709 /* fall through */
3710
3711 case DATA_ST_PX_BE:
3712 /* print the backend */
3713 if (px->cap & PR_CAP_BE) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3714 chunk_printf(&msg, sizeof(trash),
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3715 /* name */
3716 "<tr align=center class=\"backend\"><td>Backend</td>"
3717 /* queue : current, max */
3718 "<td align=right>%d</td><td align=right>%d</td>"
3719 /* sessions : current, max, limit, cumul. */
3720 "<td align=right>%d</td><td align=right>%d</td><td align=right>%d</td><td align=right>%d</td>"
3721 /* bytes : in, out */
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3722 "<td align=right>%lld</td><td align=right>%lld</td>"
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3723 /* denied: req, resp */
3724 "<td align=right>%d</td><td align=right>%d</td>"
3725 /* errors : request, connect, response */
3726 "<td align=right></td><td align=right>%d</td><td align=right>%d</td>\n"
3727 /* server status : reflect backend status (up/down) : we display UP
3728 * if the backend has known working servers or if it has no server at
3729 * all (eg: for stats). Tthen we display the total weight, number of
3730 * active and backups. */
3731 "<td align=center>%s</td><td align=center>%d</td>"
3732 "<td align=center>%d</td><td align=center>%d</td>"
3733 /* rest of server: nothing */
3734 "<td align=center colspan=2></td></tr>"
3735 "",
3736 px->nbpend /* or px->totpend ? */, px->nbpend_max,
3737 px->beconn, px->beconn_max, px->fullconn, px->cum_beconn,
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3738 px->bytes_in, px->bytes_out,
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3739 px->denied_req, px->denied_resp,
3740 px->failed_conns, px->failed_resp,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3741 (px->srv_map_sz > 0 || !px->srv) ? "UP" : "DOWN",
3742 px->srv_map_sz, px->srv_act, px->srv_bck);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3743
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3744 if (buffer_write_chunk(rep, &msg) != 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3745 return 0;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3746 }
3747
3748 s->data_ctx.stats.px_st = DATA_ST_PX_END;
3749 /* fall through */
3750
3751 case DATA_ST_PX_END:
3752 chunk_printf(&msg, sizeof(trash), "</table><p>\n");
3753
3754 if (buffer_write_chunk(rep, &msg) != 0)
3755 return 0;
3756
3757 s->data_ctx.stats.px_st = DATA_ST_PX_FIN;
3758 /* fall through */
3759
3760 case DATA_ST_PX_FIN:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3761 return 1;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3762
3763 default:
3764 /* unknown state, we should put an abort() here ! */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3765 return 1;
3766 }
3767}
3768
3769
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3770/* Iterate the same filter through all request headers.
3771 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3772 * Since it can manage the switch to another backend, it updates the per-proxy
3773 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3774 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3775int apply_filter_to_req_headers(struct session *t, struct buffer *req, struct hdr_exp *exp)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3776{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3777 char term;
3778 char *cur_ptr, *cur_end, *cur_next;
3779 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3780 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3781 struct hdr_idx_elem *cur_hdr;
3782 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]3783
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3784 last_hdr = 0;
3785
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3786 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3787 old_idx = 0;
3788
3789 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3790 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3791 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3792 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3793 (exp->action == ACT_ALLOW ||
3794 exp->action == ACT_DENY ||
3795 exp->action == ACT_TARPIT))
3796 return 0;
3797
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3798 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3799 if (!cur_idx)
3800 break;
3801
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3802 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3803 cur_ptr = cur_next;
3804 cur_end = cur_ptr + cur_hdr->len;
3805 cur_next = cur_end + cur_hdr->cr + 1;
3806
3807 /* Now we have one header between cur_ptr and cur_end,
3808 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3809 */
3810
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3811 /* The annoying part is that pattern matching needs
3812 * that we modify the contents to null-terminate all
3813 * strings before testing them.
3814 */
3815
3816 term = *cur_end;
3817 *cur_end = '\0';
3818
3819 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3820 switch (exp->action) {
3821 case ACT_SETBE:
3822 /* It is not possible to jump a second time.
3823 * FIXME: should we return an HTTP/500 here so that
3824 * the admin knows there's a problem ?
3825 */
3826 if (t->be != t->fe)
3827 break;
3828
3829 /* Swithing Proxy */
3830 t->be = (struct proxy *) exp->replace;
3831
3832 /* right now, the backend switch is not too much complicated
3833 * because we have associated req_cap and rsp_cap to the
3834 * frontend, and the beconn will be updated later.
3835 */
3836
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3837 t->rep->rto = t->req->wto = t->be->srvtimeout;
3838 t->req->cto = t->be->contimeout;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3839 last_hdr = 1;
3840 break;
3841
3842 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3843 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3844 last_hdr = 1;
3845 break;
3846
3847 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3848 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3849 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3850 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3851 break;
3852
3853 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3854 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3855 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3856 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3857 break;
3858
3859 case ACT_REPLACE:
3860 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3861 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3862 /* FIXME: if the user adds a newline in the replacement, the
3863 * index will not be recalculated for now, and the new line
3864 * will not be counted as a new header.
3865 */
3866
3867 cur_end += delta;
3868 cur_next += delta;
3869 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3870 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3871 break;
3872
3873 case ACT_REMOVE:
3874 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
3875 cur_next += delta;
3876
3877 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3878 txn->req.eoh += delta;
3879 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3880 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3881 cur_hdr->len = 0;
3882 cur_end = NULL; /* null-term has been rewritten */
3883 break;
3884
3885 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3886 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3887 if (cur_end)
3888 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3889
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3890 /* keep the link from this header to next one in case of later
3891 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3892 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3893 old_idx = cur_idx;
3894 }
3895 return 0;
3896}
3897
3898
3899/* Apply the filter to the request line.
3900 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3901 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3902 * Since it can manage the switch to another backend, it updates the per-proxy
3903 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3904 */
3905int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
3906{
3907 char term;
3908 char *cur_ptr, *cur_end;
3909 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3910 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3911 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3912
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3913
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3914 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3915 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3916 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3917 (exp->action == ACT_ALLOW ||
3918 exp->action == ACT_DENY ||
3919 exp->action == ACT_TARPIT))
3920 return 0;
3921 else if (exp->action == ACT_REMOVE)
3922 return 0;
3923
3924 done = 0;
3925
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3926 cur_ptr = req->data + txn->req.som;
3927 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3928
3929 /* Now we have the request line between cur_ptr and cur_end */
3930
3931 /* The annoying part is that pattern matching needs
3932 * that we modify the contents to null-terminate all
3933 * strings before testing them.
3934 */
3935
3936 term = *cur_end;
3937 *cur_end = '\0';
3938
3939 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3940 switch (exp->action) {
3941 case ACT_SETBE:
3942 /* It is not possible to jump a second time.
3943 * FIXME: should we return an HTTP/500 here so that
3944 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3945 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3946 if (t->be != t->fe)
3947 break;
3948
3949 /* Swithing Proxy */
3950 t->be = (struct proxy *) exp->replace;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3951
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3952 /* right now, the backend switch is not too much complicated
3953 * because we have associated req_cap and rsp_cap to the
3954 * frontend, and the beconn will be updated later.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3955 */
3956
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3957 t->rep->rto = t->req->wto = t->be->srvtimeout;
3958 t->req->cto = t->be->contimeout;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3959 done = 1;
3960 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3961
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3962 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3963 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3964 done = 1;
3965 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3966
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3967 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3968 txn->flags |= TX_CLDENY;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3969 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3970 done = 1;
3971 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3972
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3973 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3974 txn->flags |= TX_CLTARPIT;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3975 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3976 done = 1;
3977 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3978
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3979 case ACT_REPLACE:
3980 *cur_end = term; /* restore the string terminator */
3981 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3982 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3983 /* FIXME: if the user adds a newline in the replacement, the
3984 * index will not be recalculated for now, and the new line
3985 * will not be counted as a new header.
3986 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3987
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3988 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3989 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3990
Willy Tarreaua9bd1982007-04-03 20:03:18 +0200[diff] [blame]3991 txn->req.sol = req->data + txn->req.som;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3992 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3993 HTTP_MSG_RQMETH,
3994 cur_ptr, cur_end + 1,
3995 NULL, NULL);
3996 if (unlikely(!cur_end))
3997 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3998
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3999 /* we have a full request and we know that we have either a CR
4000 * or an LF at <ptr>.
4001 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4002 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
4003 hdr_idx_set_start(&txn->hdr_idx, txn->req.sl.rq.l, *cur_end == '\r');
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4004 /* there is no point trying this regex on headers */
4005 return 1;
4006 }
4007 }
4008 *cur_end = term; /* restore the string terminator */
4009 return done;
4010}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]4011
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4012
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4013
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4014/*
4015 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
4016 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4017 * unparsable request. Since it can manage the switch to another backend, it
4018 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4019 */
4020int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
4021{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4022 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4023 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4024 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4025 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4026
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4027 /*
4028 * The interleaving of transformations and verdicts
4029 * makes it difficult to decide to continue or stop
4030 * the evaluation.
4031 */
4032
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4033 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4034 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4035 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
4036 exp = exp->next;
4037 continue;
4038 }
4039
4040 /* Apply the filter to the request line. */
4041 ret = apply_filter_to_req_line(t, req, exp);
4042 if (unlikely(ret < 0))
4043 return -1;
4044
4045 if (likely(ret == 0)) {
4046 /* The filter did not match the request, it can be
4047 * iterated through all headers.
4048 */
4049 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4050 }
4051 exp = exp->next;
4052 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4053 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4054}
4055
4056
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4057
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4058/*
4059 * Manager client-side cookie
4060 */
4061void manage_client_side_cookies(struct session *t, struct buffer *req)
4062{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4063 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4064 char *p1, *p2, *p3, *p4;
4065 char *del_colon, *del_cookie, *colon;
4066 int app_cookies;
4067
4068 appsess *asession_temp = NULL;
4069 appsess local_asession;
4070
4071 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4072 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4073
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4074 if (t->be->cookie_name == NULL &&
4075 t->be->appsession_name == NULL &&
4076 t->be->capture_name == NULL)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4077 return;
4078
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4079 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4080 * we start with the start line.
4081 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]4082 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4083 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4084
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4085 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4086 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4087 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4088
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4089 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4090 cur_ptr = cur_next;
4091 cur_end = cur_ptr + cur_hdr->len;
4092 cur_next = cur_end + cur_hdr->cr + 1;
4093
4094 /* We have one full header between cur_ptr and cur_end, and the
4095 * next header starts at cur_next. We're only interested in
4096 * "Cookie:" headers.
4097 */
4098
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4099 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
4100 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4101 old_idx = cur_idx;
4102 continue;
4103 }
4104
4105 /* Now look for cookies. Conforming to RFC2109, we have to support
4106 * attributes whose name begin with a '$', and associate them with
4107 * the right cookie, if we want to delete this cookie.
4108 * So there are 3 cases for each cookie read :
4109 * 1) it's a special attribute, beginning with a '$' : ignore it.
4110 * 2) it's a server id cookie that we *MAY* want to delete : save
4111 * some pointers on it (last semi-colon, beginning of cookie...)
4112 * 3) it's an application cookie : we *MAY* have to delete a previous
4113 * "special" cookie.
4114 * At the end of loop, if a "special" cookie remains, we may have to
4115 * remove it. If no application cookie persists in the header, we
4116 * *MUST* delete it
4117 */
4118
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4119 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4120
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4121 /* del_cookie == NULL => nothing to be deleted */
4122 del_colon = del_cookie = NULL;
4123 app_cookies = 0;
4124
4125 while (p1 < cur_end) {
4126 /* skip spaces and colons, but keep an eye on these ones */
4127 while (p1 < cur_end) {
4128 if (*p1 == ';' || *p1 == ',')
4129 colon = p1;
4130 else if (!isspace((int)*p1))
4131 break;
4132 p1++;
4133 }
4134
4135 if (p1 == cur_end)
4136 break;
4137
4138 /* p1 is at the beginning of the cookie name */
4139 p2 = p1;
4140 while (p2 < cur_end && *p2 != '=')
4141 p2++;
4142
4143 if (p2 == cur_end)
4144 break;
4145
4146 p3 = p2 + 1; /* skips the '=' sign */
4147 if (p3 == cur_end)
4148 break;
4149
4150 p4 = p3;
4151 while (p4 < cur_end && !isspace((int)*p4) && *p4 != ';' && *p4 != ',')
4152 p4++;
4153
4154 /* here, we have the cookie name between p1 and p2,
4155 * and its value between p3 and p4.
4156 * we can process it :
4157 *
4158 * Cookie: NAME=VALUE;
4159 * | || || |
4160 * | || || +--> p4
4161 * | || |+-------> p3
4162 * | || +--------> p2
4163 * | |+------------> p1
4164 * | +-------------> colon
4165 * +--------------------> cur_ptr
4166 */
4167
4168 if (*p1 == '$') {
4169 /* skip this one */
4170 }
4171 else {
4172 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4173 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4174 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4175 (p4 - p1 >= t->fe->capture_namelen) &&
4176 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4177 int log_len = p4 - p1;
4178
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4179 if ((txn->cli_cookie = pool_alloc(capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4180 Alert("HTTP logging : out of memory.\n");
4181 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4182 if (log_len > t->fe->capture_len)
4183 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4184 memcpy(txn->cli_cookie, p1, log_len);
4185 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4186 }
4187 }
4188
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4189 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4190 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4191 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4192 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4193 char *delim;
4194
4195 /* if we're in cookie prefix mode, we'll search the delimitor so that we
4196 * have the server ID betweek p3 and delim, and the original cookie between
4197 * delim+1 and p4. Otherwise, delim==p4 :
4198 *
4199 * Cookie: NAME=SRV~VALUE;
4200 * | || || | |
4201 * | || || | +--> p4
4202 * | || || +--------> delim
4203 * | || |+-----------> p3
4204 * | || +------------> p2
4205 * | |+----------------> p1
4206 * | +-----------------> colon
4207 * +------------------------> cur_ptr
4208 */
4209
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4210 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4211 for (delim = p3; delim < p4; delim++)
4212 if (*delim == COOKIE_DELIM)
4213 break;
4214 }
4215 else
4216 delim = p4;
4217
4218
4219 /* Here, we'll look for the first running server which supports the cookie.
4220 * This allows to share a same cookie between several servers, for example
4221 * to dedicate backup servers to specific servers only.
4222 * However, to prevent clients from sticking to cookie-less backup server
4223 * when they have incidentely learned an empty cookie, we simply ignore
4224 * empty cookies and mark them as invalid.
4225 */
4226 if (delim == p3)
4227 srv = NULL;
4228
4229 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]4230 if (srv->cookie && (srv->cklen == delim - p3) &&
4231 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4232 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4233 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4234 txn->flags &= ~TX_CK_MASK;
4235 txn->flags |= TX_CK_VALID;
4236 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4237 t->srv = srv;
4238 break;
4239 } else {
4240 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4241 txn->flags &= ~TX_CK_MASK;
4242 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4243 }
4244 }
4245 srv = srv->next;
4246 }
4247
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4248 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4249 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4250 txn->flags &= ~TX_CK_MASK;
4251 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4252 }
4253
4254 /* depending on the cookie mode, we may have to either :
4255 * - delete the complete cookie if we're in insert+indirect mode, so that
4256 * the server never sees it ;
4257 * - remove the server id from the cookie value, and tag the cookie as an
4258 * application cookie so that it does not get accidentely removed later,
4259 * if we're in cookie prefix mode
4260 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4261 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4262 int delta; /* negative */
4263
4264 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
4265 p4 += delta;
4266 cur_end += delta;
4267 cur_next += delta;
4268 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4269 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4270
4271 del_cookie = del_colon = NULL;
4272 app_cookies++; /* protect the header from deletion */
4273 }
4274 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4275 (t->be->options & (PR_O_COOK_INS | PR_O_COOK_IND)) == (PR_O_COOK_INS | PR_O_COOK_IND)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4276 del_cookie = p1;
4277 del_colon = colon;
4278 }
4279 } else {
4280 /* now we know that we must keep this cookie since it's
4281 * not ours. But if we wanted to delete our cookie
4282 * earlier, we cannot remove the complete header, but we
4283 * can remove the previous block itself.
4284 */
4285 app_cookies++;
4286
4287 if (del_cookie != NULL) {
4288 int delta; /* negative */
4289
4290 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
4291 p4 += delta;
4292 cur_end += delta;
4293 cur_next += delta;
4294 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4295 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4296 del_cookie = del_colon = NULL;
4297 }
4298 }
4299
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4300 if ((t->be->appsession_name != NULL) &&
4301 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4302 /* first, let's see if the cookie is our appcookie*/
4303
4304 /* Cool... it's the right one */
4305
4306 asession_temp = &local_asession;
4307
4308 if ((asession_temp->sessid = pool_alloc_from(apools.sessid, apools.ses_msize)) == NULL) {
4309 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
4310 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
4311 return;
4312 }
4313
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4314 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4315 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4316 asession_temp->serverid = NULL;
4317
4318 /* only do insert, if lookup fails */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4319 if (chtbl_lookup(&(t->be->htbl_proxy), (void *) &asession_temp) != 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4320 if ((asession_temp = pool_alloc(appsess)) == NULL) {
4321 /* free previously allocated memory */
4322 pool_free_to(apools.sessid, local_asession.sessid);
4323 Alert("Not enough memory process_cli():asession:calloc().\n");
4324 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4325 return;
4326 }
4327
4328 asession_temp->sessid = local_asession.sessid;
4329 asession_temp->serverid = local_asession.serverid;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4330 chtbl_insert(&(t->be->htbl_proxy), (void *) asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4331 } else {
4332 /* free previously allocated memory */
4333 pool_free_to(apools.sessid, local_asession.sessid);
4334 }
4335
4336 if (asession_temp->serverid == NULL) {
4337 Alert("Found Application Session without matching server.\n");
4338 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4339 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4340 while (srv) {
4341 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4342 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4343 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4344 txn->flags &= ~TX_CK_MASK;
4345 txn->flags |= TX_CK_VALID;
4346 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4347 t->srv = srv;
4348 break;
4349 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4350 txn->flags &= ~TX_CK_MASK;
4351 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4352 }
4353 }
4354 srv = srv->next;
4355 }/* end while(srv) */
4356 }/* end else if server == NULL */
4357
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4358 tv_delayfrom(&asession_temp->expire, &now, t->be->appsession_timeout);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4359 }/* end if ((t->proxy->appsession_name != NULL) ... */
4360 }
4361
4362 /* we'll have to look for another cookie ... */
4363 p1 = p4;
4364 } /* while (p1 < cur_end) */
4365
4366 /* There's no more cookie on this line.
4367 * We may have marked the last one(s) for deletion.
4368 * We must do this now in two ways :
4369 * - if there is no app cookie, we simply delete the header ;
4370 * - if there are app cookies, we must delete the end of the
4371 * string properly, including the colon/semi-colon before
4372 * the cookie name.
4373 */
4374 if (del_cookie != NULL) {
4375 int delta;
4376 if (app_cookies) {
4377 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
4378 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4379 cur_hdr->len += delta;
4380 } else {
4381 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4382
4383 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4384 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4385 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4386 cur_hdr->len = 0;
4387 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]4388 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4389 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4390 }
4391
4392 /* keep the link from this header to next one */
4393 old_idx = cur_idx;
4394 } /* end of cookie processing on this header */
4395}
4396
4397
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4398/* Iterate the same filter through all response headers contained in <rtr>.
4399 * Returns 1 if this filter can be stopped upon return, otherwise 0.
4400 */
4401int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4402{
4403 char term;
4404 char *cur_ptr, *cur_end, *cur_next;
4405 int cur_idx, old_idx, last_hdr;
4406 struct http_txn *txn = &t->txn;
4407 struct hdr_idx_elem *cur_hdr;
4408 int len, delta;
4409
4410 last_hdr = 0;
4411
4412 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4413 old_idx = 0;
4414
4415 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4416 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4417 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4418 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4419 (exp->action == ACT_ALLOW ||
4420 exp->action == ACT_DENY))
4421 return 0;
4422
4423 cur_idx = txn->hdr_idx.v[old_idx].next;
4424 if (!cur_idx)
4425 break;
4426
4427 cur_hdr = &txn->hdr_idx.v[cur_idx];
4428 cur_ptr = cur_next;
4429 cur_end = cur_ptr + cur_hdr->len;
4430 cur_next = cur_end + cur_hdr->cr + 1;
4431
4432 /* Now we have one header between cur_ptr and cur_end,
4433 * and the next header starts at cur_next.
4434 */
4435
4436 /* The annoying part is that pattern matching needs
4437 * that we modify the contents to null-terminate all
4438 * strings before testing them.
4439 */
4440
4441 term = *cur_end;
4442 *cur_end = '\0';
4443
4444 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4445 switch (exp->action) {
4446 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4447 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4448 last_hdr = 1;
4449 break;
4450
4451 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4452 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4453 last_hdr = 1;
4454 break;
4455
4456 case ACT_REPLACE:
4457 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4458 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4459 /* FIXME: if the user adds a newline in the replacement, the
4460 * index will not be recalculated for now, and the new line
4461 * will not be counted as a new header.
4462 */
4463
4464 cur_end += delta;
4465 cur_next += delta;
4466 cur_hdr->len += delta;
4467 txn->rsp.eoh += delta;
4468 break;
4469
4470 case ACT_REMOVE:
4471 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4472 cur_next += delta;
4473
4474 /* FIXME: this should be a separate function */
4475 txn->rsp.eoh += delta;
4476 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4477 txn->hdr_idx.used--;
4478 cur_hdr->len = 0;
4479 cur_end = NULL; /* null-term has been rewritten */
4480 break;
4481
4482 }
4483 }
4484 if (cur_end)
4485 *cur_end = term; /* restore the string terminator */
4486
4487 /* keep the link from this header to next one in case of later
4488 * removal of next header.
4489 */
4490 old_idx = cur_idx;
4491 }
4492 return 0;
4493}
4494
4495
4496/* Apply the filter to the status line in the response buffer <rtr>.
4497 * Returns 0 if nothing has been done, 1 if the filter has been applied,
4498 * or -1 if a replacement resulted in an invalid status line.
4499 */
4500int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4501{
4502 char term;
4503 char *cur_ptr, *cur_end;
4504 int done;
4505 struct http_txn *txn = &t->txn;
4506 int len, delta;
4507
4508
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4509 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4510 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4511 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4512 (exp->action == ACT_ALLOW ||
4513 exp->action == ACT_DENY))
4514 return 0;
4515 else if (exp->action == ACT_REMOVE)
4516 return 0;
4517
4518 done = 0;
4519
4520 cur_ptr = rtr->data + txn->rsp.som;
4521 cur_end = cur_ptr + txn->rsp.sl.rq.l;
4522
4523 /* Now we have the status line between cur_ptr and cur_end */
4524
4525 /* The annoying part is that pattern matching needs
4526 * that we modify the contents to null-terminate all
4527 * strings before testing them.
4528 */
4529
4530 term = *cur_end;
4531 *cur_end = '\0';
4532
4533 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4534 switch (exp->action) {
4535 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4536 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4537 done = 1;
4538 break;
4539
4540 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4541 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4542 done = 1;
4543 break;
4544
4545 case ACT_REPLACE:
4546 *cur_end = term; /* restore the string terminator */
4547 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4548 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4549 /* FIXME: if the user adds a newline in the replacement, the
4550 * index will not be recalculated for now, and the new line
4551 * will not be counted as a new header.
4552 */
4553
4554 txn->rsp.eoh += delta;
4555 cur_end += delta;
4556
Willy Tarreaua9bd1982007-04-03 20:03:18 +0200[diff] [blame]4557 txn->rsp.sol = rtr->data + txn->rsp.som;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4558 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]4559 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4560 cur_ptr, cur_end + 1,
4561 NULL, NULL);
4562 if (unlikely(!cur_end))
4563 return -1;
4564
4565 /* we have a full respnse and we know that we have either a CR
4566 * or an LF at <ptr>.
4567 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4568 txn->status = strl2ui(rtr->data + txn->rsp.sl.st.c, txn->rsp.sl.st.c_l);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4569 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
4570 /* there is no point trying this regex on headers */
4571 return 1;
4572 }
4573 }
4574 *cur_end = term; /* restore the string terminator */
4575 return done;
4576}
4577
4578
4579
4580/*
4581 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
4582 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
4583 * unparsable response.
4584 */
4585int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4586{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4587 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4588 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4589 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4590 int ret;
4591
4592 /*
4593 * The interleaving of transformations and verdicts
4594 * makes it difficult to decide to continue or stop
4595 * the evaluation.
4596 */
4597
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4598 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4599 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4600 exp->action == ACT_PASS)) {
4601 exp = exp->next;
4602 continue;
4603 }
4604
4605 /* Apply the filter to the status line. */
4606 ret = apply_filter_to_sts_line(t, rtr, exp);
4607 if (unlikely(ret < 0))
4608 return -1;
4609
4610 if (likely(ret == 0)) {
4611 /* The filter did not match the response, it can be
4612 * iterated through all headers.
4613 */
4614 apply_filter_to_resp_headers(t, rtr, exp);
4615 }
4616 exp = exp->next;
4617 }
4618 return 0;
4619}
4620
4621
4622
4623/*
4624 * Manager server-side cookies
4625 */
4626void manage_server_side_cookies(struct session *t, struct buffer *rtr)
4627{
4628 struct http_txn *txn = &t->txn;
4629 char *p1, *p2, *p3, *p4;
4630
4631 appsess *asession_temp = NULL;
4632 appsess local_asession;
4633
4634 char *cur_ptr, *cur_end, *cur_next;
4635 int cur_idx, old_idx, delta;
4636
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4637 if (t->be->cookie_name == NULL &&
4638 t->be->appsession_name == NULL &&
4639 t->be->capture_name == NULL &&
4640 !(t->be->options & PR_O_CHK_CACHE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4641 return;
4642
4643 /* Iterate through the headers.
4644 * we start with the start line.
4645 */
4646 old_idx = 0;
4647 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4648
4649 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
4650 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4651 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4652
4653 cur_hdr = &txn->hdr_idx.v[cur_idx];
4654 cur_ptr = cur_next;
4655 cur_end = cur_ptr + cur_hdr->len;
4656 cur_next = cur_end + cur_hdr->cr + 1;
4657
4658 /* We have one full header between cur_ptr and cur_end, and the
4659 * next header starts at cur_next. We're only interested in
4660 * "Cookie:" headers.
4661 */
4662
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4663 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
4664 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4665 old_idx = cur_idx;
4666 continue;
4667 }
4668
4669 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4670 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4671
4672
4673 /* maybe we only wanted to see if there was a set-cookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4674 if (t->be->cookie_name == NULL &&
4675 t->be->appsession_name == NULL &&
4676 t->be->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4677 return;
4678
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4679 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4680
4681 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4682 if (p1 == cur_end || *p1 == ';') /* end of cookie */
4683 break;
4684
4685 /* p1 is at the beginning of the cookie name */
4686 p2 = p1;
4687
4688 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
4689 p2++;
4690
4691 if (p2 == cur_end || *p2 == ';') /* next cookie */
4692 break;
4693
4694 p3 = p2 + 1; /* skip the '=' sign */
4695 if (p3 == cur_end)
4696 break;
4697
4698 p4 = p3;
4699 while (p4 < cur_end && !isspace((int)*p4) && *p4 != ';')
4700 p4++;
4701
4702 /* here, we have the cookie name between p1 and p2,
4703 * and its value between p3 and p4.
4704 * we can process it.
4705 */
4706
4707 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4708 if (t->be->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4709 txn->srv_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4710 (p4 - p1 >= t->be->capture_namelen) &&
4711 memcmp(p1, t->be->capture_name, t->be->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4712 int log_len = p4 - p1;
4713
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4714 if ((txn->srv_cookie = pool_alloc(capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4715 Alert("HTTP logging : out of memory.\n");
4716 }
4717
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4718 if (log_len > t->be->capture_len)
4719 log_len = t->be->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4720 memcpy(txn->srv_cookie, p1, log_len);
4721 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4722 }
4723
4724 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4725 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4726 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4727 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4728 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4729
4730 /* If the cookie is in insert mode on a known server, we'll delete
4731 * this occurrence because we'll insert another one later.
4732 * We'll delete it too if the "indirect" option is set and we're in
4733 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4734 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
4735 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4736 /* this header must be deleted */
4737 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4738 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4739 txn->hdr_idx.used--;
4740 cur_hdr->len = 0;
4741 cur_next += delta;
4742 txn->rsp.eoh += delta;
4743
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4744 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4745 }
4746 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4747 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4748 /* replace bytes p3->p4 with the cookie name associated
4749 * with this server since we know it.
4750 */
4751 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
4752 cur_hdr->len += delta;
4753 cur_next += delta;
4754 txn->rsp.eoh += delta;
4755
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4756 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4757 }
4758 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4759 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4760 /* insert the cookie name associated with this server
4761 * before existing cookie, and insert a delimitor between them..
4762 */
4763 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
4764 cur_hdr->len += delta;
4765 cur_next += delta;
4766 txn->rsp.eoh += delta;
4767
4768 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4769 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4770 }
4771 }
4772 /* next, let's see if the cookie is our appcookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4773 else if ((t->be->appsession_name != NULL) &&
4774 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4775
4776 /* Cool... it's the right one */
4777
4778 size_t server_id_len = strlen(t->srv->id) + 1;
4779 asession_temp = &local_asession;
4780
4781 if ((asession_temp->sessid = pool_alloc_from(apools.sessid, apools.ses_msize)) == NULL) {
4782 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4783 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4784 return;
4785 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4786 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4787 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4788 asession_temp->serverid = NULL;
4789
4790 /* only do insert, if lookup fails */
4791 if (chtbl_lookup(&(t->be->htbl_proxy), (void *) &asession_temp) != 0) {
4792 if ((asession_temp = pool_alloc(appsess)) == NULL) {
4793 Alert("Not enough Memory process_srv():asession:calloc().\n");
4794 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
4795 return;
4796 }
4797 asession_temp->sessid = local_asession.sessid;
4798 asession_temp->serverid = local_asession.serverid;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4799 chtbl_insert(&(t->be->htbl_proxy), (void *) asession_temp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4800 }/* end if (chtbl_lookup()) */
4801 else {
4802 /* free wasted memory */
4803 pool_free_to(apools.sessid, local_asession.sessid);
4804 } /* end else from if (chtbl_lookup()) */
4805
4806 if (asession_temp->serverid == NULL) {
4807 if ((asession_temp->serverid = pool_alloc_from(apools.serverid, apools.ser_msize)) == NULL) {
4808 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4809 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4810 return;
4811 }
4812 asession_temp->serverid[0] = '\0';
4813 }
4814
4815 if (asession_temp->serverid[0] == '\0')
4816 memcpy(asession_temp->serverid, t->srv->id, server_id_len);
4817
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4818 tv_delayfrom(&asession_temp->expire, &now, t->be->appsession_timeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4819
4820#if defined(DEBUG_HASH)
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4821 print_table(&(t->be->htbl_proxy));
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4822#endif
4823 }/* end if ((t->proxy->appsession_name != NULL) ... */
4824 break; /* we don't want to loop again since there cannot be another cookie on the same line */
4825 } /* we're now at the end of the cookie value */
4826
4827 /* keep the link from this header to next one */
4828 old_idx = cur_idx;
4829 } /* end of cookie processing on this header */
4830}
4831
4832
4833
4834/*
4835 * Check if response is cacheable or not. Updates t->flags.
4836 */
4837void check_response_for_cacheability(struct session *t, struct buffer *rtr)
4838{
4839 struct http_txn *txn = &t->txn;
4840 char *p1, *p2;
4841
4842 char *cur_ptr, *cur_end, *cur_next;
4843 int cur_idx;
4844
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4845 if (!txn->flags & TX_CACHEABLE)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4846 return;
4847
4848 /* Iterate through the headers.
4849 * we start with the start line.
4850 */
4851 cur_idx = 0;
4852 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4853
4854 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4855 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4856 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4857
4858 cur_hdr = &txn->hdr_idx.v[cur_idx];
4859 cur_ptr = cur_next;
4860 cur_end = cur_ptr + cur_hdr->len;
4861 cur_next = cur_end + cur_hdr->cr + 1;
4862
4863 /* We have one full header between cur_ptr and cur_end, and the
4864 * next header starts at cur_next. We're only interested in
4865 * "Cookie:" headers.
4866 */
4867
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4868 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
4869 if (val) {
4870 if ((cur_end - (cur_ptr + val) >= 8) &&
4871 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
4872 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
4873 return;
4874 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4875 }
4876
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4877 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
4878 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4879 continue;
4880
4881 /* OK, right now we know we have a cache-control header at cur_ptr */
4882
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4883 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4884
4885 if (p1 >= cur_end) /* no more info */
4886 continue;
4887
4888 /* p1 is at the beginning of the value */
4889 p2 = p1;
4890
4891 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((int)*p2))
4892 p2++;
4893
4894 /* we have a complete value between p1 and p2 */
4895 if (p2 < cur_end && *p2 == '=') {
4896 /* we have something of the form no-cache="set-cookie" */
4897 if ((cur_end - p1 >= 21) &&
4898 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
4899 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4900 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4901 continue;
4902 }
4903
4904 /* OK, so we know that either p2 points to the end of string or to a comma */
4905 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
4906 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
4907 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
4908 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4909 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4910 return;
4911 }
4912
4913 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4914 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4915 continue;
4916 }
4917 }
4918}
4919
4920
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4921/*
4922 * Try to retrieve a known appsession in the URI, then the associated server.
4923 * If the server is found, it's assigned to the session.
4924 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4925void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4926{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4927 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4928 appsess *asession_temp = NULL;
4929 appsess local_asession;
4930 char *request_line;
4931
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4932 if (t->be->appsession_name == NULL ||
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]4933 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST) ||
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4934 (request_line = memchr(begin, ';', len)) == NULL ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4935 ((1 + t->be->appsession_name_len + 1 + t->be->appsession_len) > (begin + len - request_line)))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4936 return;
4937
4938 /* skip ';' */
4939 request_line++;
4940
4941 /* look if we have a jsessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4942 if (strncasecmp(request_line, t->be->appsession_name, t->be->appsession_name_len) != 0)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4943 return;
4944
4945 /* skip jsessionid= */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4946 request_line += t->be->appsession_name_len + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4947
4948 /* First try if we already have an appsession */
4949 asession_temp = &local_asession;
4950
4951 if ((asession_temp->sessid = pool_alloc_from(apools.sessid, apools.ses_msize)) == NULL) {
4952 Alert("Not enough memory process_cli():asession_temp->sessid:calloc().\n");
4953 send_log(t->be, LOG_ALERT, "Not enough Memory process_cli():asession_temp->sessid:calloc().\n");
4954 return;
4955 }
4956
4957 /* Copy the sessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4958 memcpy(asession_temp->sessid, request_line, t->be->appsession_len);
4959 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4960 asession_temp->serverid = NULL;
4961
4962 /* only do insert, if lookup fails */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4963 if (chtbl_lookup(&(t->be->htbl_proxy), (void *)&asession_temp)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4964 if ((asession_temp = pool_alloc(appsess)) == NULL) {
4965 /* free previously allocated memory */
4966 pool_free_to(apools.sessid, local_asession.sessid);
4967 Alert("Not enough memory process_cli():asession:calloc().\n");
4968 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4969 return;
4970 }
4971 asession_temp->sessid = local_asession.sessid;
4972 asession_temp->serverid = local_asession.serverid;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4973 chtbl_insert(&(t->be->htbl_proxy), (void *) asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4974 }
4975 else {
4976 /* free previously allocated memory */
4977 pool_free_to(apools.sessid, local_asession.sessid);
4978 }
4979
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4980 tv_delayfrom(&asession_temp->expire, &now, t->be->appsession_timeout);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4981 asession_temp->request_count++;
4982
4983#if defined(DEBUG_HASH)
4984 print_table(&(t->proxy->htbl_proxy));
4985#endif
4986 if (asession_temp->serverid == NULL) {
4987 Alert("Found Application Session without matching server.\n");
4988 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4989 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4990 while (srv) {
4991 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4992 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4993 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4994 txn->flags &= ~TX_CK_MASK;
4995 txn->flags |= TX_CK_VALID;
4996 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4997 t->srv = srv;
4998 break;
4999 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5000 txn->flags &= ~TX_CK_MASK;
5001 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5002 }
5003 }
5004 srv = srv->next;
5005 }
5006 }
5007}
5008
5009
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5010/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5011 * In a GET or HEAD request, check if the requested URI matches the stats uri
5012 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5013 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5014 * It is assumed that the request is either a HEAD or GET and that the
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5015 * t->be->uri_auth field is valid. An HTTP/401 response may be sent, or
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5016 * produce_content() can be called to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5017 *
5018 * Returns 1 if the session's state changes, otherwise 0.
5019 */
5020int stats_check_uri_auth(struct session *t, struct proxy *backend)
5021{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5022 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5023 struct uri_auth *uri_auth = backend->uri_auth;
5024 struct user_auth *user;
5025 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5026 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5027
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5028 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5029 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5030 return 0;
5031
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5032 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5033
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5034 /* the URI is in h */
5035 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5036 return 0;
5037
5038 /* we are in front of a interceptable URI. Let's check
5039 * if there's an authentication and if it's valid.
5040 */
5041 user = uri_auth->users;
5042 if (!user) {
5043 /* no user auth required, it's OK */
5044 authenticated = 1;
5045 } else {
5046 authenticated = 0;
5047
5048 /* a user list is defined, we have to check.
5049 * skip 21 chars for "Authorization: Basic ".
5050 */
5051
5052 /* FIXME: this should move to an earlier place */
5053 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5054 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
5055 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
5056 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5057 if (len > 14 &&
5058 !strncasecmp("Authorization:", h, 14)) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5059 txn->auth_hdr.str = h;
5060 txn->auth_hdr.len = len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5061 break;
5062 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5063 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5064 }
5065
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5066 if (txn->auth_hdr.len < 21 ||
5067 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5068 user = NULL;
5069
5070 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5071 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
5072 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5073 user->user_pwd, user->user_len)) {
5074 authenticated = 1;
5075 break;
5076 }
5077 user = user->next;
5078 }
5079 }
5080
5081 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5082 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5083
5084 /* no need to go further */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5085 msg.str = trash;
5086 msg.len = sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]5087 txn->status = 401;
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5088 client_retnclose(t, &msg);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5089 if (!(t->flags & SN_ERR_MASK))
5090 t->flags |= SN_ERR_PRXCOND;
5091 if (!(t->flags & SN_FINST_MASK))
5092 t->flags |= SN_FINST_R;
5093 return 1;
5094 }
5095
5096 /* The request is valid, the user is authenticate. Let's start sending
5097 * data.
5098 */
5099 t->cli_state = CL_STSHUTR;
5100 t->req->rlim = t->req->data + BUFSIZE; /* no more rewrite needed */
5101 t->logs.t_request = tv_diff(&t->logs.tv_accept, &now);
5102 t->data_source = DATA_SRC_STATS;
5103 t->data_state = DATA_ST_INIT;
5104 produce_content(t);
5105 return 1;
5106}
5107
5108
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5109/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5110 * Print a debug line with a header
5111 */
5112void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
5113{
5114 int len, max;
5115 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
5116 dir, (unsigned short)t->cli_fd, (unsigned short)t->srv_fd);
5117 max = end - start;
5118 UBOUND(max, sizeof(trash) - len - 1);
5119 len += strlcpy2(trash + len, start, max + 1);
5120 trash[len++] = '\n';
5121 write(1, trash, len);
5122}
5123
5124
5125/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5126 * Local variables:
5127 * c-indent-level: 8
5128 * c-basic-offset: 8
5129 * End:
5130 */